20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour?

a. about 1.64 hours
b. about 134.00 hours
c. about 2.45 hours
d. about 61.00 hours

Please help! I'm working on my final math exam!

5 answers

t = k/r
2 = k/67
k = 134 (which happens to be the distance)

t = 134/r
t = 134/55
t = 2.436 hours

2.45?

yes

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