SOLUTION: Jason has 20 coins that are only dimes and quarters. The total value is $2.75. How many of these are quarters?

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Question 1048707: Jason has 20 coins that are only dimes and quarters. The total value is $2.75. How many of these are quarters?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Let d be dimes; q be quarters. Then:
d+q=20
10d+25q=275
So:
10d+10q=200
15q=75
q=5
Jason has 5 quarters and 15 dimes. ☺☺☺☺