Chapter 8.9, Problem 1P

To determine

To find: The earning of the employee for $18\text{h}$ .

Answer to Problem 1P

The earning of the employee for $18\text{h}$ is $\$360$ .

Explanation of Solution

Given information:

The earning of an employee for $5\text{h}$ is $\$100$ .

The equationof the earning can be written as,

  $\begin{array}{l}y\propto x\\ y=kx\\ \$100=k\left(5\right)\\ k=\$20/\text{h}\end{array}$

The earning of the employee for $18\text{h}$ can be calculated as,

  $\begin{array}{c}y=20x\\ =20\left(18\right)\\ =\$360\end{array}$

Thus, the earning of the employee for $18\text{h}$ is $\$360$ .