Wednesday, March 15, 2017

PROBLEM ON BOAT AND STREAM FOR SBI PO/ CLERK 2017


Q1. A swimmer covers a distance of 28 Km against the current and 40 Km in the direction of the current. If in each case he takes 4 hours, then the speed of the current is:
(a) 3.5 Km/h
(b) 1.5 Km/h
(c) 2.5 Km/h
(d) 4.5 Km/h
(e) None of these

Q2. If a man’s rate with the current is 12 Km/h and the rate of the current is 1 (1/2) Km/h, then his rate against the current is:
(a) 13 Km/h
(b) 7 Km/h
(c) 9 Km/h
(d) 10 Km/h
(e) None of these

Q3. A boatman can row 2 Km against the stream in 20 minutes and return in 18 minutes. Find the rate of current.
(a) 1/2 Km/h
(b) 2/3 Km/h
(c) 1/3 Km/h
(d) 1/4 Km/h
(e) None of these

Q4. A boat travels 2 Km upstream in a stream flowing at 3 Km/h and, then returns downstream to the starting point in 30 minutes. The speed of the boat in still water is:
(a) 17 Km/h
(b) 9 Km/h
(c) 13 Km/h
(d) 15 Km/h
(e) None of these

Q5. Twice the speed downstream is equal to the thrice the speed upstream, the ratio of speed in still water to the speed of the current is:
(a) 1 : 5
(b) 5 : 1
(c) 1 : 3
(d) 2 : 3
(e) None of these

Q6. A boatman goes 2 Km against the current of the stream in 1 h and goes 1 Km along the current in 10 min. How long will he take to go 5 Km in stationary water?
(a) 1 hour
(b) 1 hour 15 minutes
(c) 1 1/2 hours
(d) 40 minutes
(e) None of these

Q7. P, Q, R are three towns on a river which flows uniformly. Q is equidistant from P and R. A man rows from P to Q and returns in 10 h. He can row from P to R in 4 h. The ratio of speed of the man in still water to the speed of the current is :
(a) 5 : 3
(b) 3 : 5
(c) 2 : 5
(d) 1 : 2
(e) None of these

Q8. A man can row 30 Km upstream and 44 Km downstream in 10 hours. Also, he can row 40 Km upstream and 55 Km downstream in 13 hours. Find the rate of the current and the speed of the man in still water.
(a) 3 Km/h, 8 Km/h
(b) 3.5 Km/h, 7.5 Km/h
(c) 4.5 Km/h, 6.5 Km/h
(d) 4.5 Km/h, 6.5 Km/h
(e) None of these

Q9. A boat takes 6 hours to travel from place M to N downstream and back from N to M upstream. If the speed of the boat in still water is 4 Km/h, what is the distance between the two places?
(a) 8 Km
(b) 12 Km
(c) 6 Km
(d) Date inadequate
(e) None of these

Q10. A person can swim at 7 (1/2) Km/h in stagnant water. In a river with 1.5 Km/h current, the person swims to a certain distance and comes back within 50 min. What is the distance between the two points?
(a) 3 Km
(b) 4 Km
(c) 1 Km
(d) 2 Km
(e) None of these

Q11. A boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. If the speed of the boat in still water in 4 Km/h, then what is the velocity of the stream?
(a) 4 Km/h
(b) 3 Km/h
(c) 6 Km/h
(d) 2 Km/h
(e) None of these

Q12. A boat covers 12 Km upstream and 18 Km downstream in 3 hours, while it covers 36 Km upstream and 24 Km downstream in 6 (1/2) hours. What is the speed of the current?
(a) 1.5 Km/h
(b) 1 Km/h
(c) 2 Km/h
(d) 2.5 Km/h
(e) None of these

Q13. A motor-boat can travel at 10 Km/h in still water. It travelled 91 Km downstream in a river and then returned to the same place, taking altogether 20 hours. Find the rate of flow of river.
(a) 3 Km/h
(b) 4 Km/h
(c) 2 Km/h
(d) 5 Km/h
(e) None of these

Q14. A motor-boat, travelling at the same speed, can cover 25 Km upstream and 39 Km downstream in 8 hours. At the same speed, it can travel 35 Km upstream and 52 Km downstream in 11 hours. The speed of the stream is:
(a) 2 Km/h
(b) 3 Km/h
(c) 4 Km/h
(d) 5 Km/h
(e) None of these

Q15. A man can row against the current 3/4 of a kilometre in 15 minutes and returns the same distance in 10 minutes. The ratio of his speed to that of the current is:
(a) 3 : 5
(b) 5 : 3
(c) 1 : 5
(d) 5 : 1
(e) None of these















ALL ABOUT BLOOD RELATION

In Bank PO Exams, we will face 3 types of Blood Relation Questions. They are,

Type 1 - Deciphering Ju up Descriptions

Type 2 - Relation Puzzle
Type 3 - Coded Relations

Today we shall learn and practice these three types of Blood Relation questions with proper examples taken from previous papers. Before going into details, let's have a look at the basic relationship chart.
Here a clear knowledge of relationships and terms is necessary to find a solution. The common blood relationships and terms used for them are given below :


  • Father's brother — Uncle
  • Father's sister — Aunt
  • Wife of Uncle —Aunt
  • Husband of Aunt — Uncle
  • Uncle or Cousin
  • Father's father — grandfather
  • Father's mother — grandmother
  • Grandfa son — Father or Uncle
  • Grandfa only son — Father
  • Grandfa daughter —Aunt
  • Mother's b Uncle
  • Mother's sister — Maternal Aunt
  • Wife Maternal Aunt
  • Husband of mat Maternal Uncle
  • Maternal uncle or aunt's children — Cousin
  • Moth grandfather
  • Mother's grandmother grandmother's son —Uncle grandmother's daughter — Mother or Aunt grandmother's only daughter — Mother
  • Mother or Father's son — Brother
  • Mother or Father's daug Sister
  • Husband or wif Brother-in-law
  • Husband Sister-in-law
  • Husband o Father-in-law
  • Husband or wif Mother-in-law
  • Sister or sister-in-law's husba — Brother-in-law
  • Brother or brother-in-law' — Sister-in-law
  • Brother, brother-in-law, sister sister-in-law's son — Nephew
  • Brother, brother-in-law, sister sister-in-law's daughter — Niece
  • Son's wife — Daughter-in-law
  • Daughter's husband — Son-in-law
  • S Grandson
  • Son or daughter's d Granddaughter
  • Grandson or granddaughter's son — Great Grandson
  • Gra daughter — Great Granddaughter

In this type of questions, a round about description is given in the form of certain small relationships and you are required to analyse the whole chain of relations and decipher the direct relationship between the persons concerned.
Example Questions :
Ex.1 . Pointing to a lady in the photograph, Shaloo said, "Her son's father is the son-in-law of my mother." How is Shaloo related to the lady ?
1. Aunt
2. Sister
3. Mother
4. Cousin
5. None of these

Sol : Lady's son's father is lady's husband. So, the lady's husband is the son-in-law of Shaloo's mother, i.e. the lady is the daughter of Shaloo's mother. Thus, Shaloo is the lady's sister. Hence, the answer is (2).

2. Introducing Reena, Monika said, "She is the only daughter of my father's only daughter". How is Monika related to Reena ?
1. Aunt
2. Niece
3. Cousin
4. Data inadequate
5. None of these

Ans : (5), Monika's father's only daughter -Monika. So, Reena is Monika's daughter. i.e. Monika is Reena's mother.

3. Looking at a portrait of a man, Harsh said, "His mother is the wife of my father's son. Brothers and sisters I have none". At whose portrait was Harsh looking?
1. His son
2. His cousin
3. His uncle
4. His nephew
5. None of these

Ans : (1): Since Harsh no brother or sister, so he is his father's only son. So, wife of Harsh's father's son - Harsh's wife. Thus, Harsh's wife is the man's mother or the man is Harsh's son.

4. When Anuj saw Manish, he recalled, "He is the son of the father of my daughter's mother". Who is Manish to Anuj ?
1. Brother-in-law
2. Brother
3. Cousin
4. Uncle
5. Nephew

Ans : (1): Anuj's daughter's mother -Anuj's wife; Anuj 's wife's fahter - Anuj 's father-in-law; Father-in law's son - Anuj's brother-in-law. So, Manish is Anuj 's brother-in-law.

5. Pointing to a woman, Naman said, "She is the daughter of the only child of my grand-mother". How is the woman related to Naman ?
1. Sister
2. Niece
3. Cousin
4. Data inadequate
5. None of these

Ans : (1) : Only child of Naman's grandmother -Naman's father/mother.
Daughter of Naman's father/mother - Naman's sister.
6. Arun said, "This girl is the wife of the grand-son of my mother". Who is Arun to the girl ?
1. Father
2. Grandfather
3. Husband
4. Father-in-law
5. None of these

Ans: (4): Mother's grandson - Son; Son's wife - Daughter-in-law.
7. Rita told Mani, "The girl I met yesterday at the beach was the youngest daughter of the brother-in-law of my friend's mother." How is the girl related to Rita's friend ?
1. Cousin
2. Daughter
3. Niece
4. Friend
5. Aunt

Ans. The relations may be analysed as follows: Daughter of brother-in-law - Niece; Mother's niece - Cousin.
So, the girl is the cousin of Rita's friend. Hence, the answer is (1).

8. Pointing to a man, a woman said, "His mother is the only daughter of my mother". How is the woman related to the mother ?
1. Mother
2. Daughter
3. Sister
4. Grandmother
5. None of these

Ans : (1), Only daughter of my mother - My-self.
So, the woman is man's mother.

9. Deepak said to Nitin, "That boy playing foot-ball is the younger of the two brothers of the daughter of my father's wife. "How is the boy playing football related to Deepak ?
1. Son
2. Brother
3. Cousin
4. Nephew
5. Brother-in-law

Ans : (2) : Father's wife - Mother; Mother's daugh-ter - Sister; Deepak's sister's younger brother -Deepak's younger brother. So, the boy is Deepak's brother.

10. Pointing to a girl in the photograph, Amar said, "Her mother's brother is the only son of my mother's father." How is the girl's mother related to Amar ?
1. Mother
2. Sister
3. Aunt
4. Grandmother
5. None of these

Ans : (3) : Only son of Amar's mother's father - Amar's maternal uncle.
So, the girl's maternal uncle is Amar's maternal uncle. Thus, the girl's mother is Amar's aunt.
Practice Questions :
1. Introducing a man, a woman said, "He is the only son of my mother's mother". How is the woman related to the man?
1. Mother
2. Aunt
3. Sister
4. Niece
5. None of these
2. If Kamal says, "Ravi's mother is the only daughter of my mother", how is Kamal related to Ravi ?
1. Grandfather
2. Father
3. Brother
4. Cannot be determined
5. None of these
3. Pointing to a photograph, a man said, "I have no brother or sister but that man's father is my father's son!" Whose photograph was it ?
1. His own
2. His son's
3. His father's
4. His nephew's
5. None of these
4. Pointing to a man in a photograph, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to the man in the photograph ?
1. Mother
2. Aunt
3. Sister
4. Daughter
5. Grandmother
5. Pointing to a man in a photograph, Asha said, "His mother's only daughter is my mother". How is Asha related to that man.
1. Nephew
2. Sister
3. Wife
4. Niece
5. Grand daughter
6. Pointing to the woman in the picture, Rajiv said, "Her mother has only one grandchild whose mother is my wife". How is the woman in the picture related to Rajiv ?
1. Cousin
2. Wife
3. Sister
4. Data inadequate
5. None of these
7. Introducing a man, a woman said, "His wife is the only daughter of my father. "How is that man related to the woman ?
1. Brother
2. Father-in-law
3. Maternal uncle
4. Husband
5. None of these
8. Pointing towards a boy, Veena said, "He is the son of only son of my grandfather. "How is that boy related to Veena ?
1. Uncle
2. Brother
3. Cousin
4. Data inadequate
5. None of these
9. If X is the brother of the son of Y's son, how is X related to Y ?
1. Son
2. Brother
3. Cousin
4. Grandson
5. Uncle
10. Pointing to a gentleman, Deepak said, "His only brother is the father of my daughter's father". How is the gentleman related to Deepak
1. Grandfather
2. father
3. Brother-in-law
4. Uncle
5. None of these
Answers :
1. Ans: (4):
Mother's mother - Maternal grand-mother, Maternal grandmother's only son -Maternal uncle.
So, the man is woman's maternal uncle i.e. the woman is man's niece.
2. (5) :
Only daughter of Kamal's mother - Kamal's sister.
So, Ravi's mother is Kamal's sister or Kamal is the brother of Ravi's mother i.e. Ravi's maternal uncle.
3.(2) : Since the narrator has no brother, his father's son is he himself.
So, the man who is talking is the father of the man in the photo-graph.
Thus, the man in the photograph is his son.
4. (3) :
Only son of woman's grandfather -Woman's father; Man's brother's father -. Man's father.
So, the woman is man's sister.
5.(d) :
Asha's mother mother is man's mother i.e., Asha's mother is man's sister or Asha is man's niece.
6. (b) :
Rajiv's wife's child - Rajiv's child The woman's mother is the grandmother of Rajiv's child.
So, the woman is Rajiv's wife.
7. (d) :
Only daughter of woman's father = woman herself. So, the man is woman's husband.
8. (b) :
Only son of grandfather - Father' Son of father - Brother. So, the boy is Veena's brother.
9.(d) :
Son of Y's son - Grandson; Brother of Y;'s grandson - Y's grandson. So, X is Y's grandson.
10. (d) :
Father of Deepak's daughter's father - Deepak's father.
So, the man's brother is Deepak's father or the man is the brother of Deepak's father i.e. Deepak's uncle.

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