Question

One of the two buses completes a journey of 300 km in 7.5 hours and the other a
journey of 450 km in 9 hours. The ratio of their speeds is ...........​

Answer 1

Answer:

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Here's ur answer :

Consider, two buses are bus b1 and b2 completes a journey of 300 km in 7.5 hr and a journey of 450 km in 9 hr respectively.

.°. for bus b1,

distance (d1) = 300 km, time (t1) =7.5hr

.°. speed (v1) = distance /time = d1/t1

.°. v1 = 300/7.5 = 40 km/h

Now, for bus b2,

d1 = 450 km , t2 = 9 hr

.°. v2 = d2/t2

.°. v2 = 450/9 = 50 km/h

.°. »»» The ratio of speeds of buses b1 and b2 = v1/v2

= 40/50 = 4/5

= 0.8/1

Their ratio = b1: b2 = 0.8 : 1,,

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