Question

2. William's cell phone bill was $135.65. He had to pay $45 for

the plan and then pay per gigabyte. He used 5 gigabytes. How much
did he pay per gigabyte?

Answer 1

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Answer 2

Take away the monthly $45 cost of the cell phone plan, and you see that he paid $90.65 for the 5 gigabytes of data that he used...to find what he paid per gigabyte, $90.65 / 5 = $18.13 per gigabyte.