Question

Abdul while driving a school computer average speed for the trip to be 20 km per hour on his return trip along the small route there is less traffic and average is 40 km per hour. What is average speed for abdul trip?

Answer 1

Answer:

26.67km/hr

Explanation:

let the distance be x

total distance =2x

t1=d/s

t1=x/20

t2=d/s

t2=x/40

total time=x/20+x/40

total time=3x/40

average speed=total distance covered/total time taken

average speed=2x/3x/40=2x*40/3x

average speed=26.5km/hr