Question

Abdul while travelling to school,computes the average speed for 20km/hr On his return trip along the same route,there is less traffic and average speed is 30km/hr what is the average speed of abdulla trip

Answer 1

Answer: LET DISTANCE = X

TIME = d/s

T1 = X/20

T2 = X/30

AVERAGE SPEED = TOTAL DISTANCE / TIME TAKEN

= X+X / X/20+X/30

= 2X /3X /60+2X /60

= 2X×60/5X

= 24 KM/hr

Explanation: