k 6. Mahesh is traveling from his home to office. There was a lot of rush on the road. So he travels for 40 seconds with speed of 40km/hr and for 1min30seconds with speed of 60km/hr. Find his average speed
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Answers
Answered by
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50 km/hr
Explanation:
average speed =total speed/2
=40+60/2
=100/2
=50 km /hr
Answered by
0
Answer:
700/13 km/hr
Explanation:
he traveled with speed of 40km/h for 40sec
40 sec = 40/3600 hrs
Since, distance= speedxtime, Distance traveled in these 40 sec
= 40km/hrs x 40/3600hrs
= 4/9 km
60 km/h for 1min and 30 sec or 90 seconds.
90 sec= 90/3600 hrs
Distance travelled in these 90 seconds=
60km/hrs x 90/3600hrs
= 6/4 km
Total distance travelled by mahesh= 4/9 + 6/4
= 70/36 km
Total time taken by mahesh= 90sec+40sec= 130 sec or 130/3600 hrs
Average speed = Total distance/Total time taken
= 70/36 ÷ 130/3600
= 70x3600/ 36x130
= 700/13 km/h
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