Question

aa car is moving on a straight road covers one third of the distance with speed 20 km per hour and rest with a speed of 60 km per hour the average speed of a car is ​

Answer 1

Answer:

avrg. speed= total distance/total time taken

let first time be t1 and another t2

1/3+2/3 ÷ t1 + t2

t1= 2/3*1/60=1/90

t2=1/3*1/20=1/60

adding both t

=3+2/180

=36 kh/h