a woman is 7 times as old as her son after 5 years she would be four time as her that what is the present ages of mother and son
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x=7y
x is mom
y is son
x+5=4(y+5) (this is 5 yrs later)
x+5-4y-20=0
x-4y=15
substitute x=7y in this
7y-4y=3y=15
y=5
x=35
son is 5 yrs old and mom is 35 yrs old
gotchaa
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