The ratio of two number A and B is 5 : 3. If both numbers are increased by 5, then the ratio of A and B becomes 3 : 2. What is the sum of initial values of A and B?
Show answer & explanation
Correct answer: D
Explanation
Let A = 5x, B = 3x
(5x + 5) / (3x + 5) = 3 / 2
10x + 10 = 9x + 15
x = 5
A = 25, B = 15
Sum = 25 + 15 = 40