Question 899493: a coin bank conatins fifty coins in dimes and quarters. the coins have a total value of $8.60. find the number of dimes in the bank Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! d+q=50,
10*d+25*q=860
d=50-q
10*(50-q)+25*q=860
500-10q+25*q=860
15*q=360
q=24
d=50-q
d=26 q=24
check
26+24=50
10*d+25*q=860
10*26+25*24=860
260+600=860
860=860
ok
