Question

If 40% of x = 15% of y, then (y - x)/(y + x) is-
1. 5∶4
2. 5∶11 
3. 11∶5
4. 4∶5

Answer 1

Correct Answer - Option 2 : 5∶11 

Given:

40/100) × x = (15/100) × y

Calculation:

40/100) × x = (15/100) × y

⇒ x/y = 15/40

⇒ x/y = 3/8

⇒ x ∶ y = 3p∶ 8p

⇒ (y - x)/(y + x) = (8p - 3p)/(8p + 3p)

⇒ (y - x)/(y + x) = 5p/11p

∴ (y - x) ∶ (y + x) = 5∶ 11

The Correct option is 2 i.e. 5∶11