WAEC Mathematics 2024 Paper

Concept:If a variable varies “partly as” one quantity and “partly inversely as” another, each part gets its own constant.Explanation:W varies partly as M.So one part of W is $k_1 M$, where $k_1$ is a constant.W varies partly inversely as P.So the other part of W is $\frac{k_2}{P}$, where $k_2$ is a constant.Combining both parts gives the total relation:$$W = k_1M + \frac{k_2}{P}$$This matches option C.Answer:$$W = k_1M + \frac{k_2}{P}$$Therefore, the correct option is C.