Question

A person swims 100 m in the first
40 s. 20 m in the next 40 and 45 m
in the lost 20 s. What is the average
speed?
(Ans: 2.25 m/s)
​

Answer 1

avg. speed= total distance

total time

here, total distance=100+20+45=165m

total time=40+40+20=100 sec

so,avg speed=165/100=1.65m/sec