SOLUTION:
Peter is now three times as old as John. Three years ago the sum of their ages was 22. How old is John now?
Algebra.Com
Question 739677:
Peter is now three times as old as John. Three years ago the sum of their ages was 22. How old is John now?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
P=3J
P-3+J-3=22
3J-3+J-3=22
4J=22+3+3
4J=28
J=28/4
J=7 YEARS OLD FOR JOHN NOW.
P=3*7=21 YEARS OLD FOR PETER NOW.
PROOF:
21-3+7-3=22
17+4=21
21=21
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