SOLUTION: Kevin and tim have 56 coins in a jar. Some quarters and some nickels. It totals 5.80. How many are quarters and how many are nickels
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Question 507709: Kevin and tim have 56 coins in a jar. Some quarters and some nickels. It totals 5.80. How many are quarters and how many are nickels Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! n = number of nickels
5n = value of the nickels in cents
q = number of quarters
25q = value of the quarters in cents
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n + q = 56
n = 56 - q
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5n + 25q = 580 cents
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5*(56-q) +25q = 580
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280 -5q +25q = 580
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20q = 300
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q = 15
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n = 56 -q
n = 56 -15
n = 41
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Check to see the vaue.
5(41) = 205
25(15) = 375
205 + 375 = 580
Correct.
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Answer: They have 15 quarters and 41 nickels.
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Done.
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