Algebra-2

If the number of minutes (M) needed to solve an exercise set of variation problems varies directly as the number of problems (P) and inversely as the number of people (N) working on the solutions, we can write the equation as:

M = k * (P / N)

where k is the constant of variation.

To find the value of k, we can substitute the given values of M, P, and N into the equation:

36 minutes = k * (18 problems / 4 people)

Simplifying:

36 minutes = k * 4.5 problems/person

Divid...