The problems on this page deal with solving for distance travelled, rate of travel, and time travelled when one factor is unknown. The basic formula is

*distance = rate x time*or*d = r x t*. If distance be measured in kilometres, the process is the same.- How far will a car travel at an average speed of 60 miles per hour in 3 hours?
- d = r x t

d (in miles) = 60 x 3

d = 180 miles - What is the average speed of a car that travels 180 miles in 3 hours?
- r = d ÷ t

r (in m.p.h) = 180 ÷ 3

r = 60 m.p.h. - How long will it take a car travelling an average of 60 m.p.h. to travel 180 miles?
- t = d ÷ r

t (in hours) = 180 ÷ 60

t = 3 hours