Question

A car goes from A to B with an average speed of 60 km/hr. The journey takes 30 hrs. It returns from B to A with an average speed of 40 km/hr. Find average speed of the car during the round trip in km/hr.​

Answer 1

Answer:

100 km/hr

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Answer 2

Answer:

A car travels from point A with an average speed of 60 km/h to point B. The journey takes 30 hrs. It returns from B with an average speed of 40 km/h to point A. The average speed of the car in the complete journey is $3.3km/h$    

Step-by-step explanation:

• The average speed is the total distance covered divided by the total time taken to travel the total distance

         average speed=total distance/total time

from the question, we have

speed of the car in the first half (A to B) $=60km/h$

speed of the car in the second half  (B to A) $=40km/h$

total time taken $t=30hrs$

so the average speed of the trip $v=\frac{60+40}{30}=3.3km/h$