Mr. Jones jogs the same route each day. The amount of time he jogs is inversely proportional to his jogging rate.

What option gives possible rates and times for two of his jogs?
a. 3mph for 2 hours and 4.5mph for 3 hours
b. 4mph for 2 hours and 3mph for 3 hours
c. 4mph for 3 hours and 6mph for 4.5 hours
d. 4mph for 3 hours and 6mph for 2 hours

The correct answer is:

b. 4mph for 2 hours and 3mph for 3 hours