Question

An elevator descends into a mine shaft at the rate of 6 m/min. If the descend
starts from 20 meter above the ground level, how long will it take to reach - 340m?

Answer 1

-340m represent that is below the ground level.
total distance covered by elevator.
=20m+340m
=360m
speed of elevator =6m/mm
time taken to reach at bottom
t =d *s
=360 *6
=60minutes
=1hour