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December 20, 2014

December 20, 2014

Posted by **justin** on Friday, April 16, 2010 at 1:24am.

- math -
**Reiny**, Friday, April 16, 2010 at 8:23amYou have more information than is needed

let Glen's present age be x

then Ben's present age is 4x/7

in 15 years:

Glen will be x+15

Ben will be 4x/7 + 15

We are told

x+15 + 4x/7+15 = 63

7x + 105 + 4x + 105 = 441

11x = 441 - 210

11x = 231

x = 21

So Glen is now 21 and Ben is now 12

The fact that "Fifteen years fromnow Ben will be 3/4 as old as Glen" was not needed, but confirms our answer.

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