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December 21, 2014

December 21, 2014

Posted by **roy** on Monday, January 28, 2013 at 9:53pm.

- high shoool algebra -
**Reiny**, Monday, January 28, 2013 at 10:12pmages now:

Bob ---- x

Joy -----x+20

ages 3 years ago:

Bob --- x-3

Joy ---- x+20 - 3 = x+17

at that time, Joy was 5 times as old as Bob

---> x+17 = 5(x-3)

x+17 = 5x - 15

-4x = - 32

x = 33/4 = 8

Bob is now 8 years, Joy is 28

Three years ago, Bob was 5 ,and Joy was 25

Was she 5 times as old as Bob, YES!!

- high shoool algebra -
**i**, Tuesday, January 29, 2013 at 5:58am67087-

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