Question

1.
An elevator descends into a mine shaft at the rate of 6m / min. if the descent starts from 10 m above the ground level , how long will it take to reach -350m.
​

Answer 1

Answer:

It will take 35 minute to reach -350m

Answer 2

Given:

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

Step-by-step explanation:

Refer the attachment

As we know that an elevator descends into a mine shaft at the rate of 6 m/min, which means that the distance of 6 m is travelled in the time 1 min or in other words, time taken to travel 6 m distance is 1 min.

We are provided that 10 m above the ground level and we need to find how long will it take to reach - 350 m below the ground, which is in opposite direction.

So here this question, first will find the total distance covered by the mine shaft and then using the simple unitary method and doing basic mathematical calculations, we can easily find out the time taken to cover the total distance.

Finally

The time taken to cover the total distance = 60 min = 1 h

━━━━━━━━━━━━━━━━━━━━━