SOLUTION: Joe has a collection of nickels and dimes that's worth $6.00. If the number of dimes were doubled and the number of nickels were increased by 6, the value of the coins would be $9
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Question 278936: Joe has a collection of nickels and dimes that's worth $6.00. If the number of dimes were doubled and the number of nickels were increased by 6, the value of the coins would be $9.90. How many dimes does he have? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 5n+10d=600
5(n+6)+10*(2d)=990
d=36 n=48
check
5*48+10*36=600
240+360=600
600=600
ok
check
5*(54)+10*72=990
270+720=990
990=990
ok
