AFCAT Model Paper 10

Given:
70% of (A – B) = 49% of (A + B)
Calculation:
According to question:
70×

(A−B)

100

=

49(A+B)

100

⇒ 70(A - B) = 49 (A + B)
⇒ 10(A - B) = 7(A + B)
⇒ 10A – 10B = 7A + 7B
⇒ 10A – 7B = 7A + 10B
⇒ 3A = 17B
⇒

A

B

=

17

3

∴ A ∶ B = 17 ∶ 3
The correct option is 1 i.e. 17 ∶ 3