The time required to do a job varies inversely as the number of people working. it takes 6 hr for 8 bricklayers to build a park wall. how long will it take 7 bricklayers to complete the job?

6  6/7 hrs

Step-by-step explanation:

The general equation for inverse proportion is y = k/x, where k is the constant of proportionality.  We need to determine the value of k from the given data:

y = k/x becomes 6 = k/8, so that k = 48.

Then y = 48/x represents the length of time required for x bricklayers to build the wall.  

If there are 7 bricklayers, then x = 7, and y = 48/7

It requires 7 bricklayers 48/7 hours (6  6/7 hours) to build the wall.

c. 4 and 1/2 pounds is the answer! : )