Question

car travels A certain distance with a speed of 50 km per hour and return with a speed of 40 kilometre per hour calculate the average speed​

Answer 1

speed A= 50kmph

speed B= 40kmph

average speed= ?

here, we have

speed A+speed B/2

=50+40/2

=90/2

=45

hence, average speed is 45 kmph