Question

A jar contains n nickels and d dimes. There are 30 coins in the jar, and the total value of the coins is $2.20. How many nickels and how many dimes are in the jar?

Answer 1

16 Nickles and 14 Dimes

Explanation:

What we know

• n + d = 30
• .05n + .1d = 2.2 (total change equals $2.20)

1. (.05n + 0.1d = 2.2) -10
2. -.5n - d = -22
3. .5n = 8
4. n = 16