The ratio of two numbers is 2 : 1. If each number is increased by 5, then the new ratio becomes 3 : 2. What is the sum of the numbers?
Answer & explanation
Correct answer: option 1
A : B = 2 : 1,
After adding 5, the ratio becomes,
A : B = 3 : 2
⇒ (3 - 2)units = 5
⇒ 1 unit = 5,
⇒ Sum of initial numbers = (2 + 1) unit x 5 = 3 x 5 = 15.