To average 48 mi/hr, you need to cover 106 miles in 2.208 hours.
The first half took 53/36 = 1.472 hours
So, how fast do you need to go to cover the other 53 miles in (2.208-1.472) hours?
On a drive from your home to town, you
wish to average 48 mph. The distance from
your home to town is 106 miles. However,
at 53 miles (half way), you find you have
averaged only 36 mph.
What average speed must you maintain in
the remaining distance in order to have an
overall average speed of 48 mph?
1 answer
1 answer