algebra 1 part 2
posted by ryan .
Bobbie has 45 coins in dimes and quarters. The total value of the coins is $7.65. How many quarters and dimes does have?

q + d = 45
q = 45d
10d + 25q = 7.65
Substitute 45d for q in last equation and solve for d. Insert that value into the first equation and solve for q. Check by inserting both values into the last equation.
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