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Two Dimensional Tables	Index

Sequential Rate Problems

Some problems require a sequence of steps. The solution of one determines a value needed for the solution of the next equation. The last equation produces the answer. Problems in this class contain statements which have a fact in common. However, the common fact is not specified and must be calculated.

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.