IBPS RRB PO Prelims 12 sep 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
Given below are two quantities named I and II. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose among the possible answers.
Calculate quantity I and quantity II on the basis of the given information then compare them and answer the following questions accordingly.
The following question based on IBPS RRB PO topic of previous year question answers
- Quantity I:
- A man deposits Rs. 1600 in a bank at the rate of compound interest of 25% per annum compounded annually. What will be the interest earned by the man after 3 years?
- Quantity II:
- Rs. 1533
(a) Quantity I > Quantity II
(b) Quantity I < Quantity II
(c) Quantity I ≥ Quantity II
(d) Quantity I ≤ Quantity II
e) Quantity I = Quantity II or No relation
The correct answers to the above question in:
Answer: (b)
Quantity I:
Interest earned after 3 years
= 1600 x ${[(1 + 25/100)^3 - 1]}$
= 1600 x $61/64$ = Rs. 1525
Quantity II:
Rs. 1533
So, Quantity I < Quantity II
So option (B) is the correct answer.
Discuss Form
Read more ibps rrb po prelims 12 sep 2020 Based Previous Year Questions and Answers
Question : 1
- Quantity I:
- One tank is filled in 6 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to ll the tank:
- Quantity II:
- 28 hrs
a) Quantity I Quantity II
b) Quantity I ≥ Quantity II
c) Quantity I > Quantity II
d) Quantity I ≤ Quantity II
e) No relation
Answer »Answer: (a)
Quantity I:
Suppose pipe A alone takes x hours to ll the tank.
Then, pipes B and C will take x/2 and x/4 hours respectively to ll the tank.
ATQ
$1/X+2/X+4/X=1/6$
$7/x=1/6$
X=42 hours.
Quantity II- 28 hrs
Question : 2
- Quantity I:
- The selling price of an article is Rs 450. If 20% of profit earned by selling the article, then the profit earned is
- Quantity II:
- The selling price of an article is Rs. 84. If 20% of profit earned by selling the article, then the east price of the article is
a) Quantity I > Quantity II
b) Quantity I < Quantity II
c) Quantity I ≥ Quantity II
d) Quantity I ≤ Quantity II
e) Quantity I = Quantity II or no relation can be established
Answer »Answer: (a)
Quantity I = $450/1.2$ × 0.2 = Rs. 75
Quantity II = $84/1.2$ = Rs. 70
Hence, Quantity I > Quantity II
Question : 3
- Quantity I:
- A certain sum is invested for 2 years at a rate of 12% simple interest. If the simple interest is Rs. 1200, then the principal is
- Quantity II:
- : Rs. 6000
a) Quantity I > Quantity I
b) Quantity I < Quantity II
c) Quantity I ≥ Quantity II
d) Quantity I ≤ Quantity II
e) Quantity I = Quantity II or no relation can be established
Answer »Answer: (b)
SI = $\text"PRT"/100$
1200 = $\text"P x 12 x 2"/100$
⇒ P = 5000
Quantity I = Rs. 5000
Quantity II = Rs. 6000
Hence, Quantity I < Quantity II
Question : 4
- Quantity I:
- Present ages of A and B are in the ratio of 4: 5 respectively. Present ages of C and D are in the ratio of 5: 6 respectively. The present average age of A, B, C and D is 40 years and 6 months. Age of A after 2 years will be half the age of D 6 years hence. Find the present average age of B and C.
- Quantity II:
- 39 years
a) Quantity I > Quantity II
b) Quantity I < Quantity II
c) Quantity I ≥ Quantity II
d) Quantity I ≤ Quantity II
e) Quantity I = Quantity II or No relation
Answer »Answer: (b)
Quantity I:
Let the present ages of A and B are 4x and 5x years respectively and the present ages of C and D are 5y and 6y years respectively.
So, sum of the ages of A, B, C and D = 4x + 5x + 5y + 6y = 40.5 x 4
So, 9x + 11y = 162
Also given that,
2 x (4x+2) = 6y + 6
So, 4x – 3y = 1
From both the equation, we get,
x = 7 and y = 9
So, the present ages of A, B, C and D are 28, 35, 45 and 54 respectively.
The present average age of B and C = $\text"35 + 45"/2$ = 40 years
Quantity II: 39
Therefore, Quantity I > Quantity II
So option (a) is the correct answer.
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.
Question : 5
If total items manufactured by India is 11160 and defective items are 840 then find the items sold by C is how much more or less than E? (items which are defective cannot be sold)
a) 426
b) 516
c) 624
d) 712
e) 564
Answer »Answer: (b)
Total items which can be sold =11160-840=10320
Required difference = $\text"17 - 12"/100 x 10320$ = 516
Question : 6
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
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