Bunuel wrote:
A car traveled 60 mph from Belnap to Lincoln and 50 mph from Lincoln to Belnap. If the whole trip was 660 miles, how long did the round trip take?
A. 6 hours
B. 11 hours
C. 12.1 hours
D. 13.2 hours
E. 24.2 hours
Here's a quick solution.
Let's see what happens if the car traveled at the SAME SPEED for the entire 660 miles.
Time =distance/speed
IF the car traveled 60 mph for the entire 660 miles, then...
Travel time = 660/60 = 11 hours
Since the car traveled at a SLOWER speed of 50 mph for
...
