Solve by using a matrix.
A collection of nickels, dimes and quarters totals $6.00. If there are 52 coins altogether and twice as many dimes as nickels, how many of each kind of coin are there?
a.
q = 5
d = 60
n = 30
c.
q = 15
d = 28
n = 6
b.
q = 35
d = 10
n = 5
d.
q = 10
d = 28
n = 14
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