Abdul, while driving to school , computes the average speed for his trip to be 20km h . On his return trip along the same route , there is less traffic and the average speed is 30 km h . what is the average speed for Abdul's trip ????
Answers
Answered by
4
Answer:
average speed for abdul ={ 20km/h +30 km/h }/ 2 = 25 kmph
Answered by
9
Answer:
hey mate:--
Explanation:
ur answer:-Let the dist. be x
dist. while going = dist while returning
time = dist./speed
so, time while going = x/20
time while coming =x/30
total time= x/20+x/30
=(3x+2x)/60
=5x/60
=x/12
total dist.= 2x
avg. speed = total dist./total speed
=2x*12/x
=24km/hr
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