Two Dimensional Tables | Index |

For example, the problem below requires three different equations to be solved. The first determines the gross wage, The second calculates the amount of the deduction. The third gives the net wage.

**Example 5:**: An employee works 40 hours a week at $6.25 an hour.
If he has a 25% deduction, what is his net pay?

Some problems use the same equation over again. In the following problem, the first use is to calculate a value needed for the second use.

**Example 6**: A coal mine yields 460 tons of coal every two days.
How much coal is produced in five days?

The fourth subclass of Class I problems requires a two dimensional table. Two equations are involved. One equation for each dimension.