Question 1079854

condi has $5 dollars in her change purse. She only has quarters, nickels and dimes. The number of dimes is equal to the number of quarters and the number of quarters is 1/3 the number of nickels. How many dimes?
<pre>Let the number of dimes be D
Then the number of quarters = D
Number of nickels = 3D
We then get: .1D + .25D + .05(3D) = 5
.1D + .25D + .15D = 5
.5D = 5
D, or number of dimes = {{{highlight_green(matrix(1,3, 5/.5, or, 10))}}}