SOLUTION: John is twice as old as his friend Peter. Peter is five years older than Alice. In five years, John will be three times as old as Alice. How old is Peter now?
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Question 1128905: John is twice as old as his friend Peter. Peter is five years older than Alice. In five years, John will be three times as old as Alice. How old is Peter now? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = John's age now
Let = Peter's age now
Let = Alice's age now
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(1)
(2)
(3)
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(2)
Plug (1) and (2) into (3)
(3)
(3)
(3)
and
(2)
(2)
and
(1)
(1)
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Peter is 5 now
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check:
(1)
(2)
(3)
(3)
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Note that Alice is newborn now
check the math
