Solve the problem.
-Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 30 coins with a total face value of $4.90, how many of the coins are nickels?
A)22 nickels
B)13 nickels
C)17 nickels
D)15 nickels

Question

Quizplus · Accepted Answer

Let the number of nickels be $n$ and the number of quarters be $q$. We have two equations: $n + q = 30$ (total coins) and $0.05n + 0.25q = 4.90$ (total value). Solving these equations simultaneously, we find $n = 13$ and $q = 17$, so there are 13 nickels.

Solve the Problem. -Mrs. Boyd Has a Desk Full of Quarters and Nickels