The time t is required a certain distance varies inversely with the speed r if it takes 4 hours to drive the distance at 40 mile
s per hour how long will it take to drive the same distance at 55 miles per hour. A. about 2.91 hours
B.160 hours
C. about 22 hours
D. about 5.50 hours Is the answer A?
We have to determine first the distance. Given the speed of 40
miles/hour and time of 4 hours, distance can be solved from the formula, speed =
distance / time. Let’s evaluate:
Distance = speed x time
Distance = 40 x 4 = 160 miles.
At same distance, we have to determine time it will take at the speed
of 40 miles/hour. Therefore we have:
