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Inventory Heung-Soo is responsible for checking a shipment of technology equipment that contains laser printers that cost $700 each and color monitors that cost $200 each. He counts 30 boxes on the loading dock. The invoice states that the order totals $15,000. Write a system of two equations that represents the situation outlined above. How many laser printers and how many color monitors were delivered?ā€‹

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semsee45

Answer:

P + M = 30

700P + 200M = 15000

Number of laser printers = 18

Number of color monitors = 12

Step-by-step explanation:

Let P = number of laser printers

Let M = number of color monitors

Given total number of boxes = 30

ā‡’ P + M = 30

Given:

  • $700 = cost of laser printer
  • $200 = cost of color monitor
  • $15000 = total cost of order

ā‡’ 700P + 200M = 15000

Rewrite P + M = 30 to make P the subject:

ā‡’ P = 30 - M

Substitute into 700P + 200M = 15000 and solve for M:

ā‡’ 700(30 - M) + 200M = 15000

ā‡’ 21000 - 700M + 200M = 15000

ā‡’ 500M = 6000

ā‡’ M = 12

Substitute found value for M into P = 30 - M and solve for P:

ā‡’ P = 30 - 12 = 18

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