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Are fog nozzles not the answer?

The rate-of-flow formula is an equation that states a relation between three numbers. The first number is a rate-of-flow (r.o.f) expressed in gallons per minute (Gpm) in the English system of measurement, or by Liters per minute (Lpm) in the SI (metric) system. Two examples are:

100 Gpm 378.5 Lpm

Since one gallon equals 3.785 liters, 100 Gpm = 378.5 Lpm, that is, the same r.o.f. Note carefully what this number says. It is a flow of a certain number per minute. The flow is not just for one minute, but for a second minute, and so on. It is true for every minute, or all minutes. Thus this number is a quantified number. It is true for all minutes, hence the name-the universal quantifier.

The second number is time expressed in minutes. Flowing water at a certain rate for a certain time produces a certain amount of water at the end of that time. This means that the third number is the total amount of water applied. The relation between these three numbers is expressed in the following r.o.f. equation.

Gpm x t = Gal Lpm x t = L

These symbols are defined as follows.

This basic rate formula is used in all sciences applied to many different things using different symbols. Let’s take one example. In physics, there is the distance formula.

r x t = d

With r = miles per hour, t = time in hours, and d = distance in miles. (Metric formula is S x t = km with S = km/hour).

For you to be able to use these formulas, you must understand several things.

First, you must understand the meaning of the quantified number, the gallons per minute, or the kilometers per hour.

Second, in order to solve a problem using this formula you must be given values for two of the three variables.

Third, then you must decide whether to multiply or divide to get the answer to the problem. This is easy to do if you understand the basic rule for manipulating an equation.