We need to set up a proportion to solve this question.

We know that 50wpm is to 80m as 40wpm is to x

Our proportion becomes 50wpm ÷ 40wpm = x ÷ 80wpm

1.25 · 80 = x

100m = x

Nina O.

asked • 04/27/15The time, t (in minutes), you need to type a term paper varies inversely with the rate, r (in words per minute), that you can type. When typing 50 words per minute, you can finish in 80 minutes. How long would it take if you could only type 40 words per minute?

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We need to set up a proportion to solve this question.

We know that 50wpm is to 80m as 40wpm is to x

Our proportion becomes 50wpm ÷ 40wpm = x ÷ 80wpm

1.25 · 80 = x

100m = x

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