A lift descends into an underground floor at the rate of 6 metre per minute. If the descent starts from 10 metres above the ground level, how much time will it take to descent 350 metres?

30 minutes

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50 minutes

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1 hour 30 minutes

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1 hour

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Solution

The correct option is D 1 hour
Total distance lift has to descend = 350 + 10 = 360m
Speed of lift = 6m/min
Time taken by lift = 360/6 = 60 min = 1 hour

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A lift descends into an underground floor at the rate of 6 metre per minute. If the descent starts from 10 metres above the ground level, how much time will it take to descent 350 metres?​

The correct option is D 1 hourTotal distance lift has to descend = 350 + 10 = 360m​ Speed of lift = 6m/min​ Time taken by lift = 360/6 = 60 min = 1 hour ​

A lift descends into an underground floor at the rate of 6 metre per minute. If the descent starts from 10 metres above the ground level, how much time will it take to descent 350 metres?

The correct option is D 1 hour
Total distance lift has to descend = 350 + 10 = 360m
Speed of lift = 6m/min
Time taken by lift = 360/6 = 60 min = 1 hour