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Harlamova29_29 [7]
3 years ago
14

You have 40 coins that are made up of nickels and quarters. The value of the coins is $6.60. Find the number of nickels and quar

ters
Mathematics
2 answers:
BaLLatris [955]3 years ago
8 0
N and q are the number of nickels and quarters, respectively.
n+q = 40
n = 40-q

0.05n + 0.25q = 6.60
0.05(40-q) + 0.25q = 6.60
2-0.05q + 0.25q = 6.60
0.20q = 4.60
q = 23
n = 40-q = 17

23 quarters and 17 nickels
Yuki888 [10]3 years ago
4 0

Answer:

22 quarters and 18 nickels.

Step-by-step explanation:

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Step-by-step explanation:

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const2013 [10]

Answer:

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Step-by-step explanation:

why well if you think of breaking down by say 1/4 of 168 all you do is divide 4 which is the whole amount by 0.2 which is the amount the father gave her so 4/0.2= 20 the you take your whole 168 and divide by 20 which the whole number for 0.2 the your answer should be this 168/20= 8.4 which then i assumed it was $8.40 hopefully that is correct hehe

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