three years ago the sum of the age of a father and his son was 40 years after 2 years the sum of the age of the father and his son will be
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let father's age be X and son's age be y. 3years ago father's age will be x-3 and son's age be y-3
so sum will be x-3+y-3=40years which implies x+y-6=40 which implies x+y=46
so after 2yrs father's age be x+2 and son's age be y+2
we have to find x+2+y+2 which is equal to x+y+4 but we know that x+y=46 substitute this in equation x+y+4 which implies 46+4=50
so answer is 50yrs
so sum will be x-3+y-3=40years which implies x+y-6=40 which implies x+y=46
so after 2yrs father's age be x+2 and son's age be y+2
we have to find x+2+y+2 which is equal to x+y+4 but we know that x+y=46 substitute this in equation x+y+4 which implies 46+4=50
so answer is 50yrs
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