Question

Jan and Jo live 1,170 miles apart. At the same time, they start driving toward each other on the same road. Jo’s constant rate is 60 mph. Jan’s is 70 mph. How long will it take them to meet?

Answer 1

Option (B) is correct, 9 hours.

Answer 2

Explanation:

to get the time taken for Jan and Jo to meet we proceed as follows;

Jan's speed=70 mph

Jo's speed =60 mph

distance between =1170

relative speed=70+60=130

time taken for them to meet will be:

time=(distance)/(relative speed)

=1170/130

=9 hours

the answer is 9 hours