Problema Solution
5 years from now they will twice as old. how old are they now?
Answer provided by our tutors
let x =father and y =son
x-5=3(y-5)
x-3y=-10
3y-x=10 -(1)
x+5=2y+5
x=2y -(2)
add 1 and 2,we get
y=10
and x= 20
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