An attendant collected 77 coins from a parking meter. The value of the coins was $9.15, and there were six more dimes than quarters.
Which system models this situation?
Assume the coins are nickels (n), dimes (d), and quarters (q).
A. {n + d + q = 77
{5n + 10d + 25q = 9.15
{d + q = 6
B. {n + d + q = 915
{5n + 10d + 25q = 9.15
{d - q = 6
C. {n + d + q = 77
{0.05n + 0.10d + 0.25q = 9.15
{d - q = 6
D. {n + d + q = 915
{0.05n + 0.10d + 0.25q = 77
{d + q = 6
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