Homework Help: Algebra

Posted by Kim on Wednesday, May 25, 2011 at 12:18am.

Justin had nickels and dimes in his pocket. when he counted out his change he had $1.30. If he had 17 coins altogether, how many dimes did he have?

Algebra - Reiny, Wednesday, May 25, 2011 at 8:15am
nickels --- x
dimes --- 17-x

solve:
5x + 10(17-x) = 130

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