2 years ago

Rosa has 20 coins with a value of 3.40. all the coins are nickels and quarters. how many of each

Mathematics

1 answer:

Elis [28]2 years ago

3 0

N + q = 20.05n + .25q = 3.40
substitute n = 20 - q .05(20-q) + .25q = 3.40
q = 12
20-12=8

n = 8

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