SOLUTION: jake has nickels, dimes, and quarters i his piggy bank worth $2.35. the number of dimes is three less than the sum of the nickels and quarters. how many of each type coin is there
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Question 1060807: jake has nickels, dimes, and quarters i his piggy bank worth $2.35. the number of dimes is three less than the sum of the nickels and quarters. how many of each type coin is there if there are 19 coins in all? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! x=nickels
y=dimes
and quarters=z
y=x+z-3;x-y+z=3
x+y+z=19
x-y+z=3
2x+2z=22
x+z=11
There are 8 dimes so $1.55 is not accounted for.
.05x+.25z=1.55
x+z=11
x=11-z
.05(11-z)+.25z=1.55
.55-.05z+.25z=1.55
.20z=1
z=5 quarters ($1.25)
y=8 dimes ($0.80)
x=6 nickels (0.30)
