SOLUTION: Gustav’s father is seven times as old as he is. One year ago, he was nine times as old as Gustav. Find Gustav’s present age.
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Question 633351: Gustav’s father is seven times as old as he is. One year ago, he was nine times as old as Gustav. Find Gustav’s present age.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
f=7g
f-1=9*(g-1)
7g-1=9g-9
8=2g
g=4
f=28
check
27=9*3
ok
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