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Marty has a piggy bank that contains $2.25. The piggy bank contains only quarters and dimes. There are twice as many dimes as quarters in the bank.How many dimes are in the piggy bank?

Respuesta :

There are 10 dimes in the piggy bank.
Let the no. of quarters be x 
No of dimes = 2x 

25x + 10 (2x) = 225 
25x + 20x = 225 
45x = 225 
x = 5 

The number of quarters is 5 

5 * 2 = 10 

The number of dimes is 10.

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