SOLUTION: a piggy bank contained 55 coins comprised of dimes and quarters. the coins added up to $9.25. how many quarters were in the piggy bank.

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Question 1065364: a piggy bank contained 55 coins comprised of dimes and quarters. the coins added up to $9.25. how many quarters were in the piggy bank.
Found 2 solutions by josgarithmetic, Edwin McCravy:
Answer by josgarithmetic(39623)   (Show Source): You can put this solution on YOUR website!
d dimes and q quarters



Simplify the money-count equation.


System to solve,
and Elimination may be used...




, and you can find d.

Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
a piggy bank contained 55 coins comprised of dimes and quarters.


So:   x + y = 55



So: 0.10x + 0.25y = 9.25

That gives you the system of equations:



Multiply the second equation through by 100:



Solve this for x and y by substitution or elimination. 

Edwin

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