Question

the ratio of the ages A B C six year ago was 2:3:5 if the sum of their present age is 168 find their present age​

Answer 1

Answer:

$let \: the \: a = 2x \\ b = 3x \\ and \\ c =5x \\ 2x + 6 + 3x + 6 + 5x + 6 = 168 \\ 10x + 18 = 168 \\ 10x = 168 - 18 \\ 10x = 150 \\ x = 15 \\ a = 2x = 2 \times 15 = 30 \\ b = 3x = 3 \times 15 = 45 \\ c = 5x = 5 \times 15 = 75$