Question

lfredo has $2.45 in nickels and quarters. If he has 17 coins in all, how many of each does he have?

Answer 1

Let n=amount of nickels. Then 17-n=amount of quarters.

A nickel is worth 5 cents and a quarter is worth 25 cents. They total 245 cents. So:
\[5n + 25(17-n) = 245\]Now, try solving this equation for n to figure out how many nickels he has.