Question

Abus travels a distance of
100km with a speed of 20km/h
and returns with a speed of
50km/h. Calculate average
speed for complete journey
O 0.2km/h
O 1.4km/h
O 23km/h
O 3km/h​

Answer 1

Answer:

28.57 km/h

Explanation:

(2xy)÷(x+y)

=(2×20×50)÷(20+50)

=2000÷70

=200/7

=28.5714286