Question

Running at an average speed of 40 km/hr, a bus completes a journey in 9/2 hours

How much time will the return journey take if the speed is increased to 45 km/hr?
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Answer 1

1. Step-by-step explanation:

Speed=40 km/hr

Time=9/2=4.5 hours

distance=speed×time

distance =40×4.5=180

bus travel 180 km in 4.5 hours

time=distance/Speed

time=180/45

time=4 hours

Answer 2

Given that:

• Running at an average speed of 40 km/hr, a bus completes a journey in 9/2 hours.

To Find:

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

We have:

• Speed = 40 km/hr
• Time = 9/2 = 4.5 hours

We know that:

• Distance = Speed × Time

Finding the distance covered:

→ Distance = 40 × 4.5

→ Distance = 180

∴ Distance covered = 180 km

Now, we have:

• Distance = 180 km
• Speed = 45 km

We know that:

• Time = Distance/Speed

Finding the time taken:

→ Time = 180/45

→ Time = 4

∴ Time taken = 4 hours

Hence,

• If the speed is increased to 45 km/hr, It completes the return journey in 4 hours.