Question

Sum of present ages of A, B and C is 72 years. If 4 years ago, their ages were in the ratio 1.2.3, find A's present age​

Answer 1

Step-by-step explanation:

A+B+C =72

4 years ago

A+B+C = 60

Ratio is 1:2:3

1k +2k +3k = 60

6k = 60

K = 10

Age of A, B, C 4 Years ago are

10,20,30

Therefore,

Present ages of A, B, C

14,24,34

Answer 2

Let the ages be = x, 2x, 3x

Four years ago, their ages were x, 2x, and 3x. After four years, the ages will be:

x + 4, 2x + 4, 3x + 4

Sum of ages = 72

=》 x + 4 + 2x + 4 + 3x + 4 = 72

=》 6x + 12 = 72

=》 6x = 60

=》 x = 10

Age of A = x = 10

Present age of A = x + 4 = 10 + 4 = 14 years