Question

The age of two persons differ by 20 years. if 5year ago the older ane be 5times as old as the younger one then their present age in Year ===?

Answer 1

let the present age of older be x
and younger be y
x-y=20 ---- 1st equation
x-5=5(y-5)
x-5=5y-25
x-5y=-20-----2nd equation
by elimination method
age of younger=20
age of older=30