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January 31, 2015

January 31, 2015

Posted by **Anonymous** on Wednesday, May 1, 2013 at 9:49pm.

How many nickels are there in the collection ?

- math -
**Reiny**, Wednesday, May 1, 2013 at 9:53pmDealing with NUMBER of coins:

nickels ---- x

dimes ----- 2x

quarters ---- 2x - 4

dealing with VALUE of our coins:

5x + 10(2x) + 25(2x-4) = 575

solve for x and back-substitute

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