Question

A and B are two towns at some distance apart. Aman
travels on moped from A to B at 45 km per hour and returns
back at the starting point at 36 km per hour. Find his average
speed for the whole journey.​

Answer 1

Answer:

40km/hr

Step-by-step explanation:

Consider that A and B are 90 km apart

so while going the speed is 45km/hr so time taken will be 2hrs

and while coming back speed is 36km/hr so time taken will be 2.5hrs

Now, Total travel distance = 180 km

and total time taken = 4.5 hrs

so average speed of the whole journey will be 180/4.5= 40km/hr

Answer 2

Answer:

His average speed = (45+36)/2

= 81/2= 40.5