The sum of the present age of a father and his son is 60 years. Six years ago, fathers age was 5 times the age of the son. After 6 years what wil he the sons age?
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x+y=60
6 years ago,
5x=y
5x-y=0
-
hence 2 equitation
-x-y+60=-0
-5x+y+0=0
-6x+60=0
-6x=-60
x=10
present age of son=10
sons age after six years=16
there are alternate method but this is most suitable and easiest one
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