4. A vending machine only accepts quarters ($0.25) and nickels ($0.05). When the machine was emptied Friday afternoon, 325 coins were counted and had a value of $56.25. Which of the following systems of equations, when solved, gives the number of quarters, q, and the number of nickels, n ?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

First of all, because there are 325 coins in total, so q+n=325; secondly, because the total amount is 56.25, so represent the total amount of quarter and nickel respectively and then sum; that is, 0.25q+0.05n=56.25< /p>