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3 years ago

7

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?

1 answer:

Brums [2.3K]3 years ago

4 0

Answer:

16 Nickles and 14 Dimes

Step-by-step explanation:

What we know

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

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

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