Question 451523: A bag contains dimes & nickels. There are 21 coins in the bag. The value of the coins is $1.70. How many of each coin is in the bag? Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! A bag contains dimes & nickels. There are 21 coins in the bag. The value of the coins is $1.70. How many of each coin is in the bag?
.
Let x = number of dimes
the
20-x = number of nickels
.
.10x + .05(20-x) = 1.70
.10x + 1-.05x = 1.70
.05x + 1 = 1.70
.05x = .70
x = 14 (dimes)
.
nickels
20-x = 20-14 = 6
