If a bus travels 160 km in 4 hours and a train travels 320 km in 5 hours at uniform speeds, then the ratio of the distances travelled by them in one hour is
1 : 2
4 : 5
5 : 8
8 : 5
Find the bus speed (distance in 1 hour).
Given: Bus travels (160, ext{km}) in (4, ext{hours}).
Speed of bus (=) (dfrac{160}{4}) km/h
(=) (40, ext{km/h})
Find the train speed (distance in 1 hour).
Given: Train travels (320, ext{km}) in (5, ext{hours}).
Speed of train (=) (dfrac{320}{5}) km/h
(=) (64, ext{km/h})
Write the ratio of distances in 1 hour (same as speeds).
Bus : Train (=) (40 : 64)
Simplify the ratio.
Both numbers are divisible by (8).
(dfrac{40}{8} : dfrac{64}{8} = 5 : 8)