The time (t) it takes to clean an office building is directly related to the number of people (p) working.

Which of the following equations can be used to find the constant of variation (k) ?

Step-by-step explanation:

The time is inversely related to the number of people working so that as the number of people working increases, the time required decreases

t = k p

divide both sides by p

t/p = k

The correct answer is c. T/p=k

Step-by-step explanation:

If time (t) is directly related to the number of people (p)

We can say that

t = k p or k=t/p or p = t/k

The options given are:

P/t=k incorrect

K/t=p incorrect

T/p=k correct

P/k=t incorrect