Dolly drives her cat on a straight highway at a uniform rate of 40 km/hr for 2 hrs and then at a uniform rate of 70 km / hr for 1 hrs. calculate her average speed for the entire journey.
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Answered by
1
it's 110/3 km/h .
average speed = 1st speed + 2nd speed / total time
average speed = 1st speed + 2nd speed / total time
Answered by
6
Average speed = total distance by total time
= 80 km + 70km / 3 hrs
= 150km / 3hrs
= 50km / hr
hope this helps you dear.....
plz mark my answer brainliest....
= 80 km + 70km / 3 hrs
= 150km / 3hrs
= 50km / hr
hope this helps you dear.....
plz mark my answer brainliest....
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