SOLUTION: A coin bank contains twenty four nickels and quarters. The coins have a total value of $3.20. Find the number of nickels and the numbers of quarters in the bank
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Question 908299: A coin bank contains twenty four nickels and quarters. The coins have a total value of $3.20. Find the number of nickels and the numbers of quarters in the bank
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
n+q=24,
0.05*n+0.25*q=3.2
n=24-q
0.05*(24-q)+0.25*q=3.2
1.2-0.05q+0.25*q=3.2
0.2*q=2.0
q=10.0
n=24-q
n=14 at 0.05 and q=10 at 0.25
check
14+10=24
0.05*n+0.25*q=3.2
0.05*14+0.25*10=3.2
0.7+2.5=3.2
3.2=3.2
ok
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