RBI assistant prelims (14 feb) 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
The following question based on RBI assistant topic of previous year question answers
(a) 6
(b) 2
(c) 4
(d) 3
e) 8
The correct answers to the above question in:
Answer :(a)
Let Ram left the business after x months, then
= $\text"1000 x X"/1 = \text"2000 x 12"/4$
⇒ x = 6
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Read more rbi assistant prelims 14 feb 2020 Based Previous Year Questions and Answers
Question : 1
Ajay spends 20% of his monthly salary on rent. He spends 40% of remaining on other expenses. If his expenditure on the other expenses is Rs. 9600, then find his expenditure on rent.
a) Rs. 12,000
b) Rs. 6,500
c) Rs. 9,000
d) Rs. 6,000
Answer »Answer: (d)
Let his monthly salary = 100x, then
Expense on rent = 20x
Expense on other expenses = 40% of (100 – 20)x
= 40% of 80x = 32x
According to question,
32x ≡ Rs. 9600
⇒ x ≡ Rs. 300
Hence, his expenditure on hours rent = 20x
⇒20 × Rs. 300
⇒ Rs. 6000.
Question : 2
A, B and C are 3 positive integers such that A is 20% less than C and C is 50% more than B. If sum of A, B and C is 111, then find the value of B
a) 32
b) 20
c) 30
d) 40
e) 36
Answer »Answer: (c)
C = B + 50% of B = 1.5 B
A = C – 20% of C = C – 0.2C = 0.8 C = 0.8 × 1.5 B = 1.2 B
According to question,
A + B + C = 111
⇒ 1.2B + B + 1.5B = 111
⇒ 3.7B = 111
⇒ B = 30
Directions:
What value will come in place of the question mark (?) in the following question?
Question : 3
12% of 50% of 8600 = ?
a) 516
b) 492
c) 680
d) 432
e) 664
Answer »Answer: (a)
? = 12% of 50% of 8600
⇒ ? = 12% of 4300
⇒ ? = 516
Question : 4
Side of a square is equal to the diameter of a circle. What is the perimeter of square, if area of circle is 616 cm2?
a) 116 cm
b) 124 cm
c) 112 cm
d) 120 cm
e) 132 cm
Answer »Answer: (c)
Radius of the circle = $√{616/π}$
= $√{\text"616 x 7"/22}$
= $√196$
= 14 cm
⇒ Side of the square = 2 × Radius
= 2 × 14 = 28 cm
Hence, the perimeter of the square = 4 × Side of the square
= 4 × 28 = 112 cm.
Question : 5
Average of 10 observation in a series is 64. If average of first 5 observation is 45 and last 3 observation is 71 . Find the average of remaining 2
a) 91
b) 103
c) 101
d) 111
Answer »Answer: (c)
Required average
$= \text"10 x 64 - 5 x 45 - 3 x 71"/2$
$= \text"640 - 225 - 213"/2$
= 101
Directions:
Study the following bar-graph carefully and answer the questions given below:
The bar graph given below shows the number of students participated from 2 schools A and B in three activities- Dance, Music and Theatre.
Question : 6
If 25% of the participants in dance and 60% of the participants in music from school B are girls, then what is the number of girl participants in dance and music together from school B?
a) 32
b) 30
c) 36
d) 30
e) 24
Answer »Answer: (b)
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