You are doing yardwork with a friend. you can finish mowing the lawn in 57 minutes, while your friend can do the same amount of work in 54 minutes. how long will it take to complete the job if you work together? round your answer to the nearest whole number.

28 minutes

Step-by-step explanation:

Speed = distance / time

Your speed is 1 lawn / 57 minutes.  Your friend's speed is 1 lawn / 54 minutes.  Working together, your combined speed is:

1/57 + 1/54

So the time it takes working together is:

Speed = distance / time

1/57 + 1/54 = 1 / t

t = 27.7 minutes

Rounded to the nearest whole number, it takes 28 minutes.

II

Step-by-step explanation:

The opinions of viewers of one television station are not necessarily representative of the population of a region.

Say a community has a thousand people, not everyone of those people would watch that exact station, among those that do watch which would be a few percentage, only a few also would even care to participate in the said survey.

You can't take a survey based on the responses gotten on just one station