IBPS RRB clerk 19 sep 2020 - Category wise Question and Answer Practice Test with Solutions & PDF
IBPS RRB Clerk PRACTICE TEST [1 - EXERCISES]
IBPS RRB clerk 19 sep 2020
Question : 76 [IBPS-RRB-clerk-2020]
Price of an article is marked up 50% above the cost price. If the discount offered in the article is Rs. 50 and the profit earned is also Rs. 50, what is the marked price of the article?
a) Rs. 200
b) Rs. 240
c) Rs. 300
d) Rs. 450
e) Rs. 600
Answer »Answer: (c)
Let the cost price of the article = Rs. 100x, then
Marked price of the article = 100x + 50% of 100x = Rs. 150x
The selling price of the article = Rs. (150x – 50)
According to question
Profit = SP – CP
50 = (150x – 50) – 100x
⇒ 50 = 50x – 50
⇒ 50x = 100
⇒ x = 2
Hence, the marked price of the article = Rs. 150x
= 150 × 2
= Rs. 300.
Question : 77 [IBPS-RRB-clerk-2020]
A boat travels upstream at the speed of 10 km/hr for t hours and downstream at the speed of 14 km/hr for 6 hours. If the distance travelled in downstream direction is 44 km more than that in upstream direction, then what is the value of t?
a) 7
b) 2
c) 3
d) 4
e) 6
Answer »Answer: (d)
Distance = Speed × Time
The distance travelled in downstream direction
= 14 × 6 = 84 km
The distance travelled in upstream direction
= 10 × t = 10t km
According to question
84 – 10t = 44
⇒ 10t = 84 – 44 = 40
⇒ t = $40/10$ = 4
Question : 78 [IBPS-RRB-clerk-2020]
A and B start a business by investing Rs. X and Rs. (X + 800) respectively. After 1 year, A earned a profit of Rs. 3200 out of the total profit of Rs. 6800, then what is the value of X?
a) 3200
b) 4000
c) 6400
d) 7200
e) 8000
Answer »Answer: (c)
As both A and B invested for the same time period, then
The ratio of their profit = Ratio of their investment
$X/3200 = \text"X + 800"/\text"6800 - 3200"$
$X/3200 = \text"X + 800"/\text"3600"$
⇒ 9X = 8(X + 800)
⇒ X = 8 × 800 = 6400
Question : 79 [IBPS-RRB-clerk-2020]
The circumference of a circle is 2 cm more than the perimeter of the rectangle and the length of the rectangle is equal to the diameter of the circle. If the breadth of the rectangle is half of the diameter of the circle, what is the radius of the circle?
a) 7 cm
b) 2 cm
c) 4 cm
d) 14 cm
e) 21 cm
Answer »Answer: (a)
Let the radius of the circle = r cm, then
Length of the rectangle = Diameter of circle = 2r cm
The breadth of the rectangle = Half of the diameter of circle = r cm
According to question
Circumference of a circle – Perimeter of rectangle = 2 cm
2πr– 2(2r + r) = 2
⇒ πr – 3r = 1
⇒ r($22/7$ – 3) = 1
⇒ r = 7
Question : 80 [IBPS-RRB-clerk-2020]
The sum of the ages of A and B after 10 years would be 106 years. If the age of A, 6 years before is equal to the age of B, 16 years hence, then what is the present age of A?
a) 32 years
b) 48 years
c) 54 years
d) 62 years
e) 66 years
Answer »Answer: (c)
Let the present age of A = A years and present age of B = B years, then
(A + 10) + (B + 10) = 106
⇒ B = 106 – 10 – 10 – A = 86 – A …. (i)
According to question
A – 6 = B + 16 ⇒ B = A – 6 – 16 = A – 22 …. (ii)
From equations (i) and (ii), we get
86 – A = A – 22
⇒ 2A = 86 + 22
⇒ A = $108/2$ = 54.
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