IBPS RRB PO Prelims 12 sep 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
Read the chart carefully and answer the following questions.
Given pie-chart shows the percentage distribution of total items sold by six Indian companies in any year.
The following question based on IBPS RRB PO topic of previous year question answers
(a) 2600
(b) 2400
(c) 1800
(d) 1600
e) 2100
The correct answers to the above question in:
Answer: (e)
items manufactured by India = 50400 x $100/120$ = 42000
Required Difference = 42000 x $\text"17 - 12"/100$
= 2100
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Read more ibps rrb po prelims 12 sep 2020 Based Previous Year Questions and Answers
Question : 1
If total items manufactured by India is 42000, then find items sold by F is what per cent more or less than items sold by D?
a) 60%
b) 66$2/3$%
c) 40%
d) 33$1/3$%
e) 25%
Answer »Answer: (d)
Required percentage = $\text"20 - 15"/15 x 100$
= 33$1/3$%
Question : 2
If China makes 97500 items which is 3900 more than items manufactured by India, then nd average of items sold by B and D?
a) 10982
b) 12432
c) 14508
d) 11204
e) 14454
Answer »Answer: (c)
Items manufactured by India = 97500 – 3900
= 93600
Required average = 93600 x $\text"16 + 15"/100$ x $1/2$
= 14508
Question : 3
Find the ratio between items sold by B to that of items sold by E
a) 16 : 17
b) 16 : 19
c) 17 : 18
d) 18 : 19
e) 15 : 16
Answer »Answer: (a)
Required Ratio = 16 : 17
Question : 4
A and B together take 6 days to complete a work. If it is given that A takes 9 days less than B to complete the work alone, then in how many days B alone will complete the work?
a) 18
b) 15
c) 12
d) 9
e) 8
Answer »Answer: (a)
Let the minimum of days taken by B alone to complete the work be x days.
Number of days taken day A alone to complete the work
= x – 9 days
$1/x + 1/\text"x - 9" = 1/6$
$\text"x(x - 9)"/\text"2x - 9" = 6$
x2 - 9x = 12x - 54
x2 - 21x + 54 = 0
x2 - 18x -3x + 54 = 0
x(x - 18) -3(x - 18) = 0
(x - 3)(x - 18) = 0
x = 3 , 18
X cannot be 3 as the number of days can’t be negative for any person
x = 18 days
Number of days taken by B alone = x = 18 days
Hence, the answer is A.
Question : 5
Two classes A and B have 320 and 240 students respectively. If the percentage of students, who didn’t pass in classes A and B are 40% and 30% respectively, what is the total number of failed students?
a) 400
b) 360
c) 320
d) 260
e) 200
Answer »Answer: (e)
Number of students who failed in class A
= 30 × 0.4 = 128
Number of students who failed in class B
= 240 × 0.3 = 72
Total numbers of failed students
= 128 + 72 = 200
Hence, the answer is E.
Question : 6
Ashutosh lends two equal sums, one at the rate of 13% per annum for ve years and the other at the rate of 9% per annum for six years, both at simple interest. If the difference in interest accrued in the two cases is Rs 1320. Find the sum.
a) Rs. 11200
b) Rs. 5600
c) Rs. 12600
d) Rs. 12000
e) None of these
Answer »Answer: (d)
Let sum be Rs P
Using the data provided in the question, we get
1320 = $\text"P x 13 x 5"/100 - \text"P x 9 x 6"/100$
On solving the equation, we get
P = Rs. 12000
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