Percentage - Quantitative Aptitude (MCQ) questions for Q. 24

Q.  20% of A is B, then B% of 20 is same as what?
- Published on 19 Oct 15

a. 4% of A
b. 10% of A
c. 20% of A
d. None

ANSWER: 4% of A
 
It is given that B measures 20% of A

=> So, 20% of A = B or 20/100 * A = B - (1)

B% of 20= B/100 X 20= 2B/10 ---(2)

=> Now, B% of 20

Substituting (1) in (2) we get

2*(2A/10) / 10= 4A/100

Hence, B% of 20 = 4% of A

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