Homework Help: Math

Posted by Grace on Tuesday, November 16, 2010 at 7:34pm.

a piggy bank contains $8.80 in quarters, dimes and nickles. there are two more than five times as many nickles as quarters, and four less than twice as many dimes as quarters. how may of each coin are there

Math - Damon, Tuesday, November 16, 2010 at 8:02pm
880 = 25 q + 10 d + 5 n

n = (2 + 5 q)

d = (2 q - 4)

so
880 = 25 q + 10 (2 q - 4) + 5 (2 + 5 q)

solve for q and go back for n and d

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