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October 21, 2014

October 21, 2014

Posted by **emma** on Monday, November 21, 2011 at 6:58pm.

- word problem -
**Reiny**, Monday, November 21, 2011 at 7:04pmbisi now -- x

ada now -- 29-x

7 yrs ago:

bisi -- x-7

ada -- 29-x - 7 = 22-x

x-7 = 2(22-x)

x-7 = 44 - 2x

3x = 51

x = 17

bisi is now 17

ada is now 12

check:

7 years ago: bisi was 10, ada was 5

Was bisi twice as old as ada ?? YES

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