Question

16. (24.6L) The time t (in minutes) that it takes Danielle

to drive to work varies inversely with the average
speed S (in miles per hour). It takes Danielle 24
minutes to get to work when he drives at an
average speed of 30 mph. What is Danielle's
average speed if he gets to work in 36 minutes.

Answer 1

20 mph

Explanation:

Varies inversely

ts = k

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It takes Danielle 24 minutes to get to work when he drives at an average speed of 30 mph

24(30) = 720

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What is Danielle's average speed if he gets to work in 36 minutes.

36s = 720

s = 720/36

s = 20

20 mph