The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 6 hours for a car moving at 63mph . How long does the trip take for a car moving at 54mph ?

Will some one walk me through to find the answer

Question

The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 6 hours for a car moving at 63mph . How long does the trip take for a car moving at 54mph ?

Will some one walk me through to find the answer

anonymous · Answer

how many miles from 1 city to another

anonymous · Answer

Doesn't say...

anonymous · Answer

miles per hour = miles / hour
63mph = miles / 6 hrs. Solve for miles = 63 * 6 = 378 miles.
Now for the other car.
54 mph = 378 miles / x hours. Solve for x = 378 miles / 54 mph = 7 hours