Question 1202190: Peter is now 12 years old and John is 3 years old. In how many years will Peter be twice as old as John? Found 2 solutions by mananth, Alan3354:Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Peter is now 12 years old and John is 3 years old. In how many years will Peter be twice as old as John?
Let Peter's age after x years be twice that of John
Peter is now 12 years old . After x years he will be 12+x years
John is 3 years old. After x years he will be 3+x years
12+x = 2(3+x)
12+x = 6+2x
2x-x = 12-6
x =6 After 6 years
You can put this solution on YOUR website! Peter is now 12 years old and John is 3 years old. In how many years will Peter be twice as old as John?
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The age difference is 9 years ---> when they're 9 & 18.
