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Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent this situation, letting x represent the number of nickels and y represent the number of quarters. Then he solved the system by graphing. What is the solution?

Respuesta :

mhanifa

Answer:

6 nickels and 9 quarters

Step-by-step explanation:

x- nickels

y- quarters

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the 2 equations are:

  • x+y=15
  • y-x= 3

add up the 2 equations:

  • 2y= 18
  • y=9

then

  • x= 15-9
  • x=6

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