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Lucas purchased 4 large posters and 6 small posters online and spent $21 on shipping. He spent x to ship each small poster and twice as much to ship each large poster. What is the cost of shipping a small poster? Explain your thinking.

Respuesta :

sqdancefan

Answer:

  $1.50

Step-by-step explanation:

The shipping cost of a large poster is 2x, so the total shipping cost is ...

  6x +4(2x) = $21

  14x = $21 . . . . . . . simplify

  x = $21/14 = $1.50 . . . . cost of shipping for a small poster

The cost of shipping a small poster is $1.50.

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