Question

A car travels at a speed of 80 km/h during the first half of its running time and at
40 km/h during the other half. Find the average speed of the car. (60 km/h) ​

Answer 1

Answer:

60km/hr

Explanation:

speed of cat in 1st half=80km/hr ---(1)

speed of car in second half =40km/hr ---(2)

average speed = (1)+(2)/2 km/hr

= 80+40/2 km/hr

= 120/2 km/hr

= 60km/hr

Answer 2

Answer:

A car travels at a speed of 80 km/h during the first half of its running time and at 40 km/h during the other half, then the average speed of the car 60km/hr. Hence, Option (C) is correct. Note: The average speed of vavg can be computed from an easier approach.

Explanation:

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