Question

an elevator descends into a mine shaft at the rate of 7m/min. if it starts from 5m above ground level, how long will it take to reach 205m down the earth

Answer 1

Answer:

this is the correct answer

Answer 2

Answer:

The time taken is 30 min or 0.5 hours.

Step-by-step explanation:

The elevator starts from 5 m above the ground.

Therefore , total distance to be covered=(205+5)m=210 m.

Speed=7 m/min.

Therefore, time=D/S

= 210/7 min

= 30 min

= 0.5 hr

Ans > The time taken is 30 min or 0.5 hours.