Abdul,while driving to school,computes the average speed for his trip to be 20km h^-1 .on his return trip along the same route .there is less traffic and the average speed is 30km h^-1 .what is the average speed for Abdul's trip ? Plz guys answer it fast ...and correctly and you try make answer in a copy plzzz
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Answer:
average speed = 24km/hr
Explanation: let distance =x
time =d/s
T1 =x/20
T2 = x/30
average speed = distance /time
= x+x/ x/20+x/30
= 2x/3x/60+2x/60
=2x × 60/ 5x
=24km/hr
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