# algebra

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1. The time t that it takes for a salesman to drive a certain distance d varies inversely as the average speed r. It takes the salesman 4.75 h to travel between two cities at 50 mi/h.

How long would the drive take at 50 mi/h?

• algebra -

t=k/r

4.75=k/50 or k= 4.75*50

• algebra -

3.96 h

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