SOLUTION: A mother is 7 times as old as her son. In 5 years time she will be 4 times her son's age. How old is the mother now?

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Question 457562: A mother is 7 times as old as her son. In 5 years time she will be 4 times her son's age. How old is the mother now?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
m=7s
m+5=4(s+5)
7s+5=4s+20
3s=15
s=5
m=35
m=35 s=5
check
40=4*10
ok