Question

A car travels 100km at a uniform speed of 40 km/h and the next 125km at a uniform speed of 50km/h. FI nd average speed of car.

Answer 1

Car travels 100km at 40km/h at first.

As we know →

Time = Distance/Speed

So, Time = 100/40 = 2.5 hours


Car now travelled 125km at 50 km/h.

So, Time taken now = 125/50 = 2.5 hours.

As, we know Average speed =

Total Distance covered / Total Time Taken

Here, total distance covered = 100+125 km
= 225 km

Total Time taken = 2.5+2.5 hours
= 5hours

So, Average speed of car throughout the journey = 225/5 = 45 km/h

Answer 2

hope this will help you