SOLUTION: There are quarters and dimes in a box. Their total value is $5.40.Quarters are 5 times as many as dimes. How many quarters and how many dimes are in the box?

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Question 1119111: There are quarters and dimes in a box. Their total value is $5.40.Quarters are 5 times as many as dimes. How many quarters and how many dimes are in the box?
Found 3 solutions by addingup, josgarithmetic, Alan3354:
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
Quarters are 5 times as many as dimes:
q = 5d
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0.25q + 0.10d = 5.40 substitute for quarters, the problem says that q = 5d:
0.25(5d) + 0.10d = 5.40
1.25d + 0.10d = 5.40
1.35d = 5.40
d = 5.40/1.35 = 4
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There are 4 dimes in the box, and since q = 5d, there are 4(5) = 20 quarters in the box

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
q%2Fd=5
q=5d

25q%2B10d=540
25%2A5d%2B10d=540
135d=540
highlight%28d=4%29----------dimes

q=5%2A4=highlight%2820%29------quarters

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There are quarters and dimes in a box. Their total value is $5.40.Quarters are 5 times as many as dimes. How many quarters and how many dimes are in the box?
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Each "set" of 5 quarters and 1 dime = $1.35
540/135 = 4 sets