Mathematics
04.11.2020 17:37
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Abank contains 35 coins, all nickels and quarters. the total value of coins is $8.15.

Abank contains 35 coins, all nickels and quarters. the total value of coins is $8.15. how many of each coin does the bank contain?
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emmahuber980
emmahuber980
5,0(67 marks)

n + q = 35

n = 35-q

0.05n + 0.25q = 8.15

0.05(35-q) +0.25q = 8.15

1.75 -0.05q + 0.25q =8.15

1.75 + 0.20q = 8.15

0.20q = 6.40

q = 6.40 / 0.20 = 32

32 quarters and 3 nickels

juansebas35
juansebas35
5,0(40 marks)
If it has a square its a right angle

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