Question

a car travels with a speed 60km/h in the initial one hour and with a speed of 40km/h in the next half hour. its average speed is

Answer 1

Explanation:

speed of car=60 on/h

time taken =1 hr

distance covered =60×1

=60km

now , speed = 40 km/h

time taken=1/2 h

distance covered= 20km

therefore,total distance= (60+20) km. = 80km

total time taken=1+1/2 hr

=3/2 hr

average speed= total distance/total time taken

=80×2/3

=160/3

=53.33 km/ hr

Answer 2

Answer:

53.33kmph

Explanation:

please see the picture