SOLUTION: Beth has 24 coins worth $2.80. Her coins are nickels,dimes, and quaters.The number of dimes equals the sum of the number of quaters and nickels. How many dimes does she have?
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Question 431023: Beth has 24 coins worth $2.80. Her coins are nickels,dimes, and quaters.The number of dimes equals the sum of the number of quaters and nickels. How many dimes does she have?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
n+d+q=24
n+(d+q)+q=24
2n+2q=24
5n+10d+25q=280
5n+10(n+q)+25q=280
5n+10n+10q+25q=280
15n+35q=280
30n+30q=360
30n+70q=560
40q=200
q=5
n=7
d=12
Beth has 7 nickels, 12 dimes, and 5 quarters..
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