Question

H varies directly as L. If H = 16 when L =40, determine H when L = 20

Answer 1

Since H varies directly as L, then we have

`H\propto L`

This implies that

`\begin{gathered} (H_1)/(L_1)=(H_2)/(L_2)=k, \\ \text{ where k is a constant} \end{gathered}`

Therefore,

`H_2=(H_1L_2)/(L_1)`

In this case,