Question

7. An elevator descends
from 10 m above the ground level
elevator descends into a mine shaft at the rate of 6 m/min. If the descent start.from 10 m
above the ground level, how long will it take to reach - 350 m.​

Answer 1

Answer:

Step-by-step explanation:

The correct answer is 400 oranges.

A total of 640 oranges are in both the baskets. So, if 1/5th of the oranges are removed from the first basket and put into the second basket, that means at least 4/5th should remain in the 1st basket. But the question says that there were oranges already in the second basket also. So the nearest option is 400 oranges.

Answer 2

Answer:

Considering the elevator to be at constant speed and the destination to be 350 m below ground level,

The elevator has to travel 10m till the ground, then 350 m more.

So, the total distance to travel is 360 m

If the elevator's speed is 6 metres/minute,

Then

Time= Distance/Speed

        = 360/6

        =60 minutes

        =1 hour

Thus the elevator would take 1 hour to reach its destination.