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alexira [117]
2 years ago
11

A collection of 77 quarters and dimes is worth $12.50. How many quarters and dimes are there? Set it up plz

Mathematics
1 answer:
mihalych1998 [28]2 years ago
4 0
So let's say quarters = x and dimes = y. You'd then put x + y = 77 (for a total of 77 coins). And your second equation would be .25x + .10y = 12.50 (.25 for the total value a quarter holds and .10 for a total value a dime holds). Then you'd do matrices on a calculator.
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