IBPS RRB clerk 19 sep 2020 Questions and Answers Detailed Explanation

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Directions:

Read the data carefully and answer the questions.

The bar graph given below shows the number of TV shows watched by five different families - A, B, C, D and E in a month.

IBPS RRB Clerk Prelims 2020
[IBPS RRB (Clerk) Prelims 2020]

The following question based on IBPS RRB Clerk topic of previous year question answers

Questions : What is the ratio of the average of the number of TV shows watched by families C, A and B to the average of the number of TV shows watched by families D and E?

(a) 6 : 5

(b) 5 : 6

(c) 4 : 5

(d) 5 : 4

e) None of these

The correct answers to the above question in:

Answer: (c)

Family Tv Shows
A 28
B 24
C 20
D 25
E 35
 Total 132 

Average of the number of TV shows watched by families C, A and B

= $\text"20+24+28"/3$ = 24

Average of the number of TV shows watched by families D and E

= $\text"25+35"/2$ = 30

Required Ratio = 24 : 30 = 4 : 5

Hence, the answer is option C.

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Read more ibps rrb clerk prelims 19 sep 2020 Based Previous Year Questions and Answers

Question : 1

The difference between the number of TV shows watched by families A and C is what percentage of the sum of the number of TV shows watched by families D and E together?

a) 6$2/3$%

b) 13$1/3$%

c) 20%

d) 33$1/3$%

e) 40%

Answer: (b)

Family Tv Shows
A 28
B 24
C 20
D 25
E 35
 Total 132 

 

Difference between the number of TV shows watched by families A and C

= 28 – 20 = 8

Sum of the number of TV shows watched by families D and E together

= 25 + 35 = 60

Required percentage = $8/6$× 100 = 13$1/3$%

Hence, the answer is option B.

Question : 2

The number of TV shows watched by family B is what percentage more than the difference of the average of the number of TV shows watched by families D and C and half of the number of TV shows watched by family E?

a) 380%

b) 420%

c) 240%

d) 190%

e) None of these

Answer: (a)

Family Tv Shows
A 28
B 24
C 20
D 25
E 35
 Total 132 

The difference between the average of the number of TV shows watched by families D and C and half of the number of TV shows watched by family E

= $\text"20+25-35"/2$ = 5

Required percentage = $\text"24-5"/5$ × 100 = 380%

Hence, the answer is option A.

Directions:

What should come in place of the question mark (?) in the following questions?

[IBPS RRB (Clerk) Prelims 2020]

Question : 3

24 + 22 ÷ 0.25 = ? × 28

a) 2

b) 4

c) 6

d) 8

e) 10

Answer: (b)

24 + 22 ÷ 0.25 = ? × 28

⇒ 24 + 88 = ? × 28

⇒ 112 = ? × 28

⇒ ? = 4

Hence, the answer is B.

Question : 4

What is the sum of the difference of the number of TV shows watched by families A and C and the difference of the number of TV shows watched by families B and D?

a) 12

b) 10

c) 8

d) 7

e) 9

Answer: (e)

Family Tv Shows
A 28
B 24
C 20
D 25
E 35
 Total 132 

The difference in the number of TV shows watched by families A and C

= 28 – 20 = 8

The difference between the number of TV shows watched by families B and D

= 25 – 24 = 1

Required sum = 8 + 1 = 9

Hence, the answer is option E

 

Question : 5

What is the total number of TV shows watched by the ve families together in the month?

a) 130

b) 140

c) 132

d) 131

e) 135

Answer: (c)

Family Tv Shows
A 28
B 24
C 20
D 25
E 35
 Total 132 

Total number of TV shows watched in the month

= 28 + 24 + 20 + 25 + 35 = 132

Hence, the answer is option C.

Question : 6

A train travelling at the speed of 72 kmph passes a pole in 30 seconds. In how much time will the same train pass the same pole if it is travelling at the speed of 54 kmph?

a) 36 seconds

b) 40 seconds

c) 24 seconds

d) 48 seconds

e) 60 seconds

Answer: (b)

Let the required time = t seconds, then

72 × 30 = 54 × t (Distance = Speed × Time)

⇒ t = 40

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IBPS RRB clerk 19 sep 2020

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