Question 399413
You have 737 coins that are all either dimes or quarters. If these coins are worth $107, how many of each type of coin do you have?
.
Let q = number of quarters
then
737-q = number of dimes
.
.25q + .10(737-q) = 107
.25q + 73.7-.10q = 107
.15q + 73.7 = 107
.15q = 33.30
q = 222 (number of quarters)
.
number of dimes:
737-q = 737-222 = 515