IBPS PO Prelims 3 oct 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
Study the following information carefully and answer the questions given below.
In the table, percentage of shirts (formal and casual) sold out of the total number of shirts sold in the week and number of casual shirts sold data related to the number of shirts sold on ve week days – Monday, Tuesday, Wednesday, Thursday and Friday are given.
Total number of shirts sold in the week = x
Day | Percentage of total shirts sold | Number of casual shirts sold |
Monday | 14% | 32 |
Tuesday | 16% | 24 |
Wednesday | 12% | 28 |
Thursday | 22% | 56 |
Friday | 18% | 20 |
Note: Total number of shirts sold on Saturday and Sunday together = 72
The following question based on IBPS PO topic of previous year question answers
(a) 102
(b) 168
(c) 84
(d) 64
e) None of these
The correct answers to the above question in:
Answer: (c)
Total number of shirts sold on weekdays
= (14 + 16 + 12 + 22 + 18)% of x
= 82% of x
Total number of shirts sold on weekends
= (100 – 82)% of x
= 18% of x
According to the question
18% of x = 72
⇒ x = 400
Number of formal shirts sold = Total number of shirts sold – Number of casual shirts sold
Day | Percentage of total shirts sold | Total number of casual shirts sold | Number of formal shirts sold |
Monday | 14% | 32 | 24 |
Tuesday | 16% | 24 | 40 |
Wednesday | 12% | 28 | 20 |
Thursday | 22% | 56 | 32 |
Friday | 18% | 20 | 52 |
The sum of the formal shirts sold on Monday, Tuesday and Wednesday together
= 24 + 40 + 20 = 84
Discuss Form
Read more ibps po prelims 3 oct 2020 Based Previous Year Questions and Answers
Question : 1
What is the ratio of the number of casual shirts sold on Monday and Wednesday together and a number of formal shirts sold on Tuesday and Thursday together?
a) 4 : 3
b) 3 : 4
c) 5 : 3
d) 6 : 5
e) None of these
Answer »Answer: (e)
Total number of shirts sold on weekdays
= (14 + 16 + 12 + 22 + 18)% of x
= 82% of x
Total number of shirts sold on weekends
= (100 – 82)% of x
= 18% of x
According to the question
18% of x = 72
⇒ x = 400
Number of formal shirts sold = Total number of shirts sold – Number of casual shirts sold
Day | Percentage of total shirts sold | Total number of casual shirts sold | Number of formal shirts sold |
Monday | 14% | 32 | 24 |
Tuesday | 16% | 24 | 40 |
Wednesday | 12% | 28 | 20 |
Thursday | 22% | 56 | 32 |
Friday | 18% | 20 | 52 |
The number of casual shirts sold on Monday and Wednesday together
= 32 + 28 = 60
The number of formal shirts sold on Tuesday and Thursday together
= 40 + 32 = 72
Hence, the required ratio = 60 : 72
= 5 : 6
Question : 2
40% of casual shirts sold and 25% of formal shirts sold on Friday of brand X, then the number of shirts sold of brands other than X on Friday is
a) 21
b) 31
c) 41
d) 51
e) None of these
Answer »Answer: (d)
Total number of shirts sold on weekdays
= (14 + 16 + 12 + 22 + 18)% of x
= 82% of x
Total number of shirts sold on weekends
= (100 – 82)% of x
= 18% of x
According to the question
18% of x = 72
⇒ x = 400
Number of formal shirts sold = Total number of shirts sold – Number of casual shirts sold
Day | Percentage of total shirts sold | Total number of casual shirts sold | Number of formal shirts sold |
Monday | 14% | 32 | 24 |
Tuesday | 16% | 24 | 40 |
Wednesday | 12% | 28 | 20 |
Thursday | 22% | 56 | 32 |
Friday | 18% | 20 | 52 |
The number of shirts sold of brand X on Friday
= 40% of 20 + 25% of 52
= 8 + 13 = 21
Hence, the required number of shirts sold
= (20 + 52) – 21
= 72 – 21 = 51.
Question : 3
A number of casual shirts sold on Thursday is what per cent more than the number of formal shirts sold on Tuesday?
a) 20%
b) 50%
c) 40%
d) 37.5%
e) None of these
Answer »Answer: (c)
Total number of shirts sold on weekdays
= (14 + 16 + 12 + 22 + 18)% of x
= 82% of x
Total number of shirts sold on weekends
= (100 – 82)% of x
= 18% of x
According to the question
18% of x = 72
⇒ x = 400
Number of formal shirts sold = Total number of shirts sold – Number of casual shirts sold
Day | Percentage of total shirts sold | Total number of casual shirts sold | Number of formal shirts sold |
Monday | 14% | 32 | 24 |
Tuesday | 16% | 24 | 40 |
Wednesday | 12% | 28 | 20 |
Thursday | 22% | 56 | 32 |
Friday | 18% | 20 | 52 |
Required percentage = $\text"56-40"/40 × 100$ = 40%
Question : 4
What is the average number of total shirts sold on Wednesday, Friday, Saturday and Sunday together?
a) 64
b) 24
c) 36
d) 48
e) None of these
Answer »Answer: (d)
Total number of shirts sold on weekdays
= (14 + 16 + 12 + 22 + 18)% of x
= 82% of x
Total number of shirts sold on weekends
= (100 – 82)% of x
= 18% of x
According to the question
18% of x = 72
⇒ x = 400
Number of formal shirts sold = Total number of shirts sold – Number of casual shirts sold
Day | Percentage of total shirts sold | Total number of casual shirts sold | Number of formal shirts sold |
Monday | 14% | 32 | 24 |
Tuesday | 16% | 24 | 40 |
Wednesday | 12% | 28 | 20 |
Thursday | 22% | 56 | 32 |
Friday | 18% | 20 | 52 |
The average number of total shirts sold on Wednesday, Friday, Saturday and Sunday together
=$\text"(28+20) + (20+52) + 72"/4$ = 48
Question : 5
A person invests a certain amount on simple interest. After 8 years he gets 16% interest. If he invests the same sum for 4 years, then he gets Rs. 9600 as interest, then the sum is
a) Rs. 96000
b) Rs. 80000
c) Rs. 48000
d) Rs. 60000
e) None of these
Answer »Answer: (e)
In 8 years, he gets 16% as interest, then
In 4 years, he will get = 8% as interest
According to question
8% ≡ Rs. 9600
⇒ 1% ≡ Rs. 1200
⇒ 100% ≡ Rs. 120000
Hence, the sum = 100% ≡ Rs. 120000.
Question : 6
Running at the speed of 3 km/hr, a person reaches his destination 10 minutes later than usual time. if he increases his speed by 1 km/hr, he reaches his destination 15 min earlier. nd the distance to his destination.
a) 10 km
b) 12 km
c) 5 km
d) 4 km
e) None of these
Answer »Answer: (c)
Let the distance to his destination be d km, then
According to question we get,
$d/3$ – $d/(3+1) = \text"10+15"/60$
⇒$d/3$ – $d/4 = 5/12$
⇒$d/12 = 5/12$
⇒ d = 5
Hence, the distance to his destination = d = 5 km
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