Question

If 50% of the difference between two numbers equals 30% of their sum, then what is the ratio between the numbers?

• A. 2 : 1
• B. 1 : 3
• C. 4 : 1
• D. 1 : 5

Answer 1

Answer:

C. 4 : 1

Let the two numbers be x and y 50% of (x - y) = 30% of (x + y) ⇒ 5x - 5y = 3x + 3y ⇒ 2x = 8y ⇒ x : y = 8 : 2 = 4 : 1