Question

The speed of a bus is 40 km per hour. How much distance does it cover in (i) 45 minutes (ii)3 hours (iii) 2 hours 30 minutes?
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Answer 1

Answer:

1. 30km

2. 120km

3. 100km

Step-by-step explanation:

Average speed = 40km per hour

1. We know that 45min = $\frac{3}{4}$ hour

So we can write the distance covered by the bus will be 40km per hour × $\frac{3}{4}$ hour = 30 km.

2. Time the bus goes on = 3 hours

Distance covered by the bus = 40km per hour × 3 hours = 120km

3. Time the bus goes on = 2.5 hours (2 hours 30min)

Distance covered by the bus = 40km per hour × 2.5 hours = 100km