Question

Running at an average speed of 40 km/hr, a bus completes a journey in 4 1/2 hours.

How much time will the return journey take if the speed is increased to 45 km/hr?

Plz answer it quickly

Answer 1

Answer:

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Answer 2

Answer:

the answer is 5 hours

Step-by-step explanation:

Let the time taken to travel 45 km/hr be x

here, distance is same

$distance = speed \div time$

let distance while going be d1 and comming be d2

d1= d2

40/4.5 = 45/x

9 = 45/x ....[40/4.5=8.8,aprox=9]

x = 5

Thus,time taken to travel same distance at 45 km/hr is 5 hours