Problema Solution
Marcy has a total of 100 dimes and quarters.If the total value of the coins is $14.05,how many quarters does she have?
Answer provided by our tutors
1 dime = 10 cents
1 quarter = 25 cents
let
q = the number of quarters
d = the number of dimes
Marcy has a total of 100 dimes and quarters
q + d = 100
the total value of all coins is $14.05 = 1405 cents and
25q + 10d = 1405
by solving the system of equations
q + d = 100
25q + 10d = 1405
we find
q = 27 quarters
d = 73 dimes
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