Question

(3)
TU 1113
28. A car travels half of the length of straight line
motion with a speed of 60 km/h. The remaining
part of the distance is covered with speed
40 km/h for half of the time of remaining journey
and with speed 20 km/h for the other half of the
time. The average speed of the car for the entire
journey is
(1) 30 km/h
(2) 40 km/h
(3) 48 km/h
(4) 45 km/h​

Answer 1

Answer:

2

Explanation:

average speed =total speed/total distance

=60+40+20/3

=40