Question

t takes about 14 person-hours of labor to break up a driveway and clear away the rubble. It takes about 8 person-hours of labor to pour and smooth concrete for the new driveway. About how many person-hours of labor does it take to break up a driveway, clear away the rubble, pour the concrete, and smooth the concrete?  6

Answer 1

22 person-hours of labor

Explanation:

From the example given, we recall the following statement

Let the number of person-hours of labor to break up a driveway and clear away the rubble = be 14

Let the number of person-hours of labor to pour and smooth concrete for the new driveway be = 8

We can then sum up both of the activities, which is,

14 + 8 = 22,

Therefore,

To break up a driveway, clear away the rubble, pour the concrete, and smooth the concrete, it will take 22 number of person-hours of labor to achieve that.

Answer 2

For this case what you must do is add the number of hours to perform the different activities.
We have then:
14 person-hours of labor to break up to driveway and clear away the rubble.
8 person-hours of labor to pour and smooth concrete for the new driveway.
Adding both activities we have
14 + 8 = 22
answer
it takes to break up to driveway, clear away the rubble, pour the concrete, and smooth the concrete about 22 person-hours of labor