Question

a person swim 100m in the first 40s ,80m in the next 40s and 45m in the last 20s .what is the average speed

Answer 1

Average speed= Total distance/Total time
= (100+80+45)m/(40+40+20)s
=225m/100s
= 2.25 m/s

Hope it helps you.....

Answer 2

Answer:

Given :

Total distance (d) = 100 + 80 + 45 = 225m

Total time taken (t) = 40 + 40 + 20 = 100sec

To find :

Average speed = Total distances covered

__________________

Total time taken

Solution :

Average speed = Total distances covered

___________________

Total time taken

= 225

____

100

= 2.25m/s.