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  1. If 15% of (A + B) = 25% of (A – B), then what percent of B is equal to A?
    1. 10%
    2. 60%
    3. 200%
    4. 400%
Correct Option: D

According to question ,
15% of (A + B) = 25% of (A – B)

15
(A + B) =
25
(A - B)
100100

⇒ 15 (A + B) = 25 (A – B)
⇒ 15 A + 15 B = 25A – 25 B
⇒ 10 A = 40 B
⇒ A = 4B
Now, let p% of B is equal to A
p
× B = A
100

p
× B = 4B
100

∴ p = 400%



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