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The idea is to write two equations, one for the number of coins, one for the amount of money. Then solve the equations.Assuming "n" is the number of nickels, and "q" the number of quarters, the equations for the coins, of course, is quite simply:

n + q = 64

And the equation for the money (I'll use cents; you can just as well use dollars if you prefer):

5n + 25q = 740

You can solve the first equation for "n", then replace that in the second equation.

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โˆ™ 2017-01-26 16:09:57
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โˆ™ 2017-02-11 17:32:56

21 quarters and 43 nickels.

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Q: You piggy bank has all nickels and quarters. You count up the coins and find out that there are 64 coins and you have a total of 7.40. How many of each type of coin do you have?
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