please answer first one
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let the age of riyaz be x and age of his mother be 7x
after 4 yrs
age of riyaz =x+4
age of mother =7x +4
According to the question
7x+4=4(x+4)
7x +4=4x+16
7x-4x=16-4
3x =12
x=12/3
4
present age of riyaz =4yrs
present age of mother =7×4
28yrs
hope it helps you
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aayushi2973:
thanks
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