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inysia [295]
3 years ago
5

6. You have a coin collection of nickels and dimes containing 63 coins. If you have $5.05, how may of each coin

Mathematics
1 answer:
S_A_V [24]3 years ago
3 0

Answer:

n + d = 20....n = 20 - d

0.05n + 0.10d = 1.35

0.05(20 - d) + 0.10n = 1.35

1 - 0.05d + 0.10d = 1.35

-0.05d + 0.10d = 1.35 - 1

0.05d = 0.35

d = 0.35/0.05

d = 7 <==== 7 dimes

n + d = 20

n + 7 = 20

n = 20 - 7

n = 13 <=== 13 nickels

Read more on Brainly.com - brainly.com/question/4688670#readmore

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