Question

Abdul while driving to school computers the average speed for his trip to be 20 km per hour on his return trip along the same route,there is less traffic and the average speed is 40 km per hour.what is a average speed for Abdul stripped

Answer 1

You can use the formula for avg speed ( if the distance is same) as=
2(v1)(v2)/ (v1+ v2)
= 2×40×20/ (40+20)
=1600/60
=26.6 kmph