SOLUTION: joe has 3 times as many dimes as quarters. the coins are worth $6.60. How much of each coin does he have?

Question 1014649: joe has 3 times as many dimes as quarters. the coins are worth $6.60. How much of each coin does he have?
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
d= 3q
0.10d+0.25q= 6.60 substitute for the value of d:
0.10(3q)+0.25q= 6.60
0.30q+0.25q= 6.60
0.55q= 6.60
q= 12 So he has 12 quarters, and:
12*3= 36 dimes
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Check:
12*0.25= 3
36*0.10= 3.60
. . . . . -------
Total .. :6.60 We have the correct answer
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