Question

An aeroplane flies around a squre whose side is 100 mile long,taking the first side @ 100 mile per hour,the second side @ 200 mile per hour ,the third side @ 300 miles per hour and the fourth side @ 400 mile per hour, what is the average speed of the aeroplane? Test the validity of your answer​

Answer 1

Answer:

average speed=distance/time

so,

100+100+100 +100/1+1/2+1/3+1/4

=400/25/12

=192