Question 998108: Ron has 14 coins with a total value of $2.30. The coins are nickels and quarters. How many of each coin does he have? Answer by fractalier(6550) (Show Source):
You can put this solution on YOUR website! Call their number n and q.
The number equation is
n + q = 14
The value equation is
5n + 25q = 230
Multiply the first equation by 5 and subtract it from the second...
5n + 25q = 230
-(5n + 5q = 70)
and get
20q = 160
q = 8
n = 6