Question

An elevator descends into a mine shaft at the rate of 6m per minute. if the descent starts from 20m above the ground level, how long will it take to reach -340m?​

Answer 1

Answer:

https://www.lidolearning.com/questions/m-bb-ncert7-ch1-ex1p4-q7/q7-an-elevator-descends-into-a/

Q7 An elevator descends into a mine shaft at the rate of 6 m ...

Answer 2

Answer:

total distance is 20+340=360 speed is 6

so time=distance/speed=360/6=60minute