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 ha

Algebra ->  Customizable Word Problem Solvers  -> Coins -> 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 ha      Log On

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 = 1920/60 = 32.

Answer. Number of dimes is 32.