a man walks 6 km at 12 km\h and retuns at 10 km/h find the average speed
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Answered by
1
Answer:
Distance on way = 6 km
Distance both ways = 6 x 2 = 12 km
Find the time taken on the way there:
Time = Distance ÷ Speed
Time = 6/12 = 0.5 hour
Find the time needed on the return trip:
Time = Distance ÷ Speed
TIme = 6 ÷ 10 = 0.6 hour
Find total time taken:
0.5 + 0.6 = 1.1 hour
Find the average speed:
Speed = Total Distance ÷ Total time
Speed = 12 ÷ 1.1 = 10.91 km/hour
Answer: 10.91 km/hour
Step-by-step explanation:
Answered by
84
Step-by-step explanation:
distance=6km
speed =12km/h
time=d/s
=6/12
=1/2
2speed=10km/h
distance=6km
time=6/10
=3/5
average speed = total distance/total time
=12÷11/10
=120/11 km/h
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