Robert B.
asked • 12/03/17
A collection of 28 coins consists of quarters and nickels and has a total value of $4. How many coins of each kind are there?
Arturo O.
answered • 12/03/17
Experienced Physics Teacher for Physics Tutoring
q = number of quarters
28 - q = number nickels
($0.05)(28 - q) + ($0.25)q = $4.00
0.05(28 - q) + 0.25q = 4
0.2q = 2.6
q = 13
28 - q = 28 - 13 = 15
There are 13 quarters and 15 nickels.
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