SOLUTION: Two-thirds of the coins in my jar are quarters. The rest are dimes. Each quarter is worth 25 cents, and each dime is worth 10 cents. The total is $19.20. How many dimes do I have?

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Question 1000039: Two-thirds of the coins in my jar are quarters. The rest are dimes. Each quarter is worth 25 cents, and each dime is worth 10 cents. The total is $19.20. How many dimes do I have?
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = number of dimes.

Then the number of quarters is 2x. 

The balance equation is

2x*25 + 10x = 1920.

Simplify and solve it:

50x + 10x = 1920,

60x = 1920,

x = 1920%2F60 = 32.

Answer. Number of dimes is 32. 


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Two-thirds of the coins in my jar are quarters. The rest are dimes. Each quarter is worth 25 cents, and each dime is worth 10 cents. The total is $19.20. How many dimes do I have?
Number of dimes: highlight_green%2832%29