A water well rig has dug to a height of -60 feet after one full day of continuous use. if the rig has been running and is currently at a height of -143.6 feet, for how long has the rig been running?

Given :

A water well rig has dug to a height , H = 60 feet after one full day of continuous use .

To Find :

If the height is currently 143.6 feet how time it been running .

Solution :

It is given that height after 24 hours of use is 60 feet .

So , height loose in 1 hours is :

Now , time taken to cover a height of 143.6 feet is :

Therefore , time taken is 57.44 hours .

Hence , this is the required solution .

answer is c

step-by-step explanation: