Question

A car moves 30 km in 0.5 hr and the next 30 kn in 2/3 hr,calculate average speed for the entire trip

Answer 1

Answer: 52.5 Km/hr

Explanation: Speed of car for first 30 km=distance1 / time1

=30/0.5

=60 km/hr

Speed of car for second 30 km=distance2 / time2

=(30 x 3)/2

=45 km/hr

Now,average speed=(Speed of car for first 30 km+Speed of car for second 30 km)/2

=(45+60)/2

=105/2

=52.5 Km/hr

Answer 2

Answer:

Hello, Friend

Explanation:

Average speed=(Total Distance/Total Time)

Total  distance =30 km+30 km

                        =60 km

Total time=1/2 hr+ 2/3 hr

                =7/6hr

Average speed=60/1÷7/6

                         =60×6/7

                         =360/7 km/hr or 51.42 km/hr