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) 20%
(b) 50%
(c) 40%
(d) 37.5%
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 |
Required percentage = $\text"56-40"/40 × 100$ = 40%
Discuss Form
Read more ibps po prelims 3 oct 2020 Based Previous Year Questions and Answers
Question : 1
A shopkeeper bought 80 pens is Rs. 400. He sold 40 pens at 60% profit and sold the remaining pens at a 20% profit. If he had sold all the pens at a 15% profit, how much less profit would he have made?
a) Rs. 65
b) Rs. 80
c) Rs. 100
d) Rs. 120
e) None of these
Answer »Answer: (c)
Cost of per pen= $400/80$
= 5 Rs/pen
Prot on 40 pens(at 60% prot)
= 5×40×60%= 120 Rs
Profit on remaining pens(at 20% profit)
= 5×40×20%= 40 Rs
Total profit on All the pens(at 15% profit)
= 5×80×15%=60
Required difference= (120+40)-60
=100 Rs.
Question : 2
The present age of B will be half of A's age 4 years hence and double of A's age 5 years ago, then what is the present age of B?
a) 6 years
b) 4 years
c) 8 years
d) 12 years
e) None of these
Answer »Answer: (a)
Let the present ages of A and B be a years and b years, then
According to question
b = $\text"(a+4)"/2$ = 2(a – 5)
⇒ (a + 4) = 4(a – 5)
⇒ (4a – a) = 4 × 5 + 4 = 24
⇒ 3a = 24
⇒ a = 8
Hence, the present age of B = b = 2(a – 5) = 2(8 – 5)
= 6 years.
Question : 3
A started a business with a certain capital. After 3 months A left the business and B joins the business and remains in business. If the ratio of the profitt at the end of the year is 5 : 6 and the initial investment of A is Rs. 6000, then the investment of B is
a) Rs. 1800
b) Rs. 2400
c) Rs. 3600
d) Rs. 4800
e) None of these
Answer »Answer: (b)
Let investment of B = Rs. x, then
According to question
(6000 × 3) : {x × (12 – 3)} = 5 : 6
⇒ 2000 : x = 5 : 6
⇒ x = 2400
Question : 4
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 : 5
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 : 6
What is the sum of the formal shirts sold on Monday, Tuesday and Wednesday together?
a) 102
b) 168
c) 84
d) 64
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 |
The sum of the formal shirts sold on Monday, Tuesday and Wednesday together
= 24 + 40 + 20 = 84
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