The formula for how far a moving object travels in terms of the rate (or speed at which it moves) and the travel time (or how long it is moving) is d = rt, where d stands for distance, r stands for
rate, and t stands for time. Rearrange the quantities in this formula to give a new formula for
travel time in terms of distance and rate of travel.
a. t = rd
b. t =
d
r
c. t =
r
d
d. t = d − r