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=dr c. t=rd d. t=d−r