Question

An elevator descends into a mine shaft at the rate of 5 m/min. If the descent starts from 10 m above the ground level, how long will it take to reach -240 m?


60 minutes

52 minutes

40 minutes

50 minutes

Answer 1

Answer:

Total Distance = 10 m. - ( - 400 m ) = 410 m. Rate = 5 m / min. => 82 mins.

Answer 2

Answer:

Total Distance = 10 m. - ( - 400 m ) = 410 m. Rate = 5 m / min. => 82 mins