Question

The total age of sindhu,madu and veni is 70.then what is the total age of the three friends before three years .please give with an explaination

Answer 1

three friends and three years back 
3x3 = 9
the total age now: 70
total age three years back: 70-9 = 61

Answer 2

Subtract 3 from all three ages so finally 70-3*3=61