Question

If A:B:C = 2:3:5 and A = x% of (B+C), then x is equal to
(A) 20
(3) 24
(C) 25
(D) 28​

Answer 1

Answer:

let the ratio be a.

so A=2a

B=3a

C=5a

now

Given

A=×% of B+C

so

2a= x/100×(3a+5a)

2a=×/100 ×(8a)

so

x=100/4

=25.

Answer 2

Answer:

let a=2k b=3kc=5k

a=x%of(b+c)

2k=x% of (3k+5k)

=x% of 8k

x/100 =2k/8k =1/4

x=100/4=25