IBPS RRB clerk 19 sep 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
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](/adminicon/bunch/images/ibps-rrb-clerk-prelims-19-sep-2020-46-50-dir.png)
The following question based on IBPS RRB Clerk topic of previous year question answers
(a) 12
(b) 10
(c) 8
(d) 7
e) 9
The correct answers to the above question in:
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
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Read more ibps rrb clerk prelims 19 sep 2020 Based Previous Year Questions and Answers
Question : 1
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
Answer »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.
Question : 2
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 »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 : 3
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 »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.
Question : 4
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 »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 : 5
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 »Answer: (b)
Let the required time = t seconds, then
72 × 30 = 54 × t (Distance = Speed × Time)
⇒ t = 40
Question : 6
Two people A and B invest an equal amount in a scheme for t and (t + 4) years respectively. If the ratio of the simple interest earned by A and B is 1 : 2, then what is the value of t?
a) 8
b) 1
c) 2
d) 4
e) 5
Answer »Answer: (d)
Let each of A and B invested Rs. 100 and the rate of interest = 1%, then
Simple interest of A = $\text"100x1xt"/100$
= $t(SI = \text"PRT"/100)$
Simple interest of B = $\text"100x1x(t+4)"/100$
= $(t+4)(SI = \text"PRT"/100)$
According to question =$t/1 = \text"t+4"/2$
⇒ t = 4
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