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October 21, 2014

October 21, 2014

Posted by **Nicole Faith** on Sunday, January 19, 2014 at 10:25pm.

- Algebra -
**Reiny**, Monday, January 20, 2014 at 12:11am10 years ago:

son --- x

father --- 3x

NOW:

son --- x+10

father --- 3x+10

12 years from now:

son --- x+22

father -- 3x + 22

x+22 = (3/5)(3x + 22)

times 5

5x + 110 = 9x + 66

-4x = -44

x = 11

so 5 years ago:

son = present age - 5

= (11+10) - 5 = 16

father = 3x+10 - 5 = 38

So 5 years ago, the son was 16, and the father was 38

(right now the son is 21, and the father is 43)

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