a car travelled 100 km distance with a speed of 60kmph and 200 km distance with a speed of 45kmph what is the average speed to cover the total distance
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16
Average speed is (100+200)/(100/60+200/45)
=300/(5/3+40/9)=300/(55/9)
=300*9/55=49.1 approximately
=300/(5/3+40/9)=300/(55/9)
=300*9/55=49.1 approximately
Answered by
8
average distance will be 300 km . the time taken will be 100÷60and200÷45.speed equals to every distance by average time so it will be for 40.5 metre per second
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