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A tire shop counted 80 invoices at the end of the month. They charge $325 for a set of new tires and $50 for a set of used tires. The total dollar amount of the invoices was $6,750. Let x represent the number of sets of new tires and y represent the number of sets of used tires. Which system of equations represents the situation?

Respuesta :

izzicg

80=x+y

6,750=325x+50y

Answer:

x + y = 80

325x = -50y + 6,750

Step-by-step explanation:

The sum of the variables, x+y, gives the total number of invoices, 80. This gives the equation: x+y=80

The total cost of the new tires plus the total cost of the used tires, 325x+50y, gives a total dollar value of $6,750. This equation can be rewritten by subtracting 50y from both sides: 325x=−50y+6,750