Question

The ratio of A's age to B's is 3:5. The ratio of B's age to C's age is 2:3. If A's age is two-fifth of C's, then what is A's age? ​

Answer 1

Answer:

Step-by-step explanation:

Ten years before : let the age of A and B was 3x and 5x respectively.

So the present age of A and B is 3x+10 and 5x+10  

Now, (3x+10)/(5x+10) = 2/3

Or, 9x+30=10x+20

Or, x=10

So present age of A= (3x+10)= 30+10 = 40

And present age of B = (5x+10) = 50+10= 60

Difference between their age = 60-40 = 20

Answer is 20.