SOLUTION: zelma is eighteen years older than her son. she was three times as old as he was one year ago. how old are they now?
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Question 246542: zelma is eighteen years older than her son. she was three times as old as he was one year ago. how old are they now?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Loved those age problems since I first saw them
z=18+s
z-1=3(s-1)
substitute
18+s-1=3(s-1)
17-s=3s-3
20=2s
s=10
z=28
check
28-1=3*(10-1)
27=3*9
27=27
ok
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