Reena has 12 more dimes than she does quarters. if reena has a total of 28 coins, how many quarters, qq, and how many dimes, dd, does reena have? use the equations and the graph below to arrive at your answer.
q = d –12
q = 28 –d
a. 28 dimes and 12 quarters
b. 20 dimes and 8 quarters
c. 12 dimes and 28 quarters
d. 8 dimes and 20 quarters