Nella drove from Albuquerque New Mexico to Garden of the God

Nella drove from Albuquerque, New Mexico to Garden of the Gods rock formation in Colorado Springs. It took her 6 hours to travel 312 miles over the mountain road. She came home on the highway. On the highway she took 5 hours to travel 320 miles. How fast did she travel using the mountain route? How much faster (in miles per hour) did she travel using the highway route?

Solution

She took her 6 hours to travel 312 miles over the mountain road

Speed = distance/time

= 312/6

= 52 miles/hr

On the highway she took 5 hours to travel 320 miles.

Speed = distance/time

= 320/5

= 64 miles/hr

[64-52] = 12  miles/hr

much faster (in miles per hour) did she travel using the highway route

Answer