GAUSS7 2015 Problem 16

You have exactly \$4.40(440 ¢) in quarters (25 ¢ coins), dimes (10 ¢ coins), and nickels (5 ¢ coins). You have the same number of each type of coin. How many dimes do you have?

Answer Choices
A. 20
B. 11
C. 10
D. 12
E. 4