SOLUTION: Sarah has $14.80 in dimes and quarters. The number of quarters is two less than three times the number of dimes. How many quarters does she have?

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Question 1023051: Sarah has $14.80 in dimes and quarters. The number of quarters is two less than three times the number of dimes. How many quarters does she have?
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
q = 3d-2
0.25q+0.10d = 14.80
0.25(3d-2)+0.10d = 14.80
You do the rest, use your calculator.