To prepare a 4% solution for a 3-gallon backpack sprayer, how much product is needed?

To determine the amount of a product needed to create a 4% solution in a 3-gallon backpack sprayer, it is essential to understand the calculations involved in mixing solutions.

First, a 4% solution means that there are 4 parts of the active ingredient for every 100 parts of the total solution. Therefore, for a 3-gallon solution, we need to convert gallons to ounces, since one gallon equals 128 ounces. Thus, 3 gallons equal 3 x 128 ounces, which totals 384 ounces.

Next, to find out how much product to use for a 4% solution, you would calculate 4% of the total volume:

4% of 384 ounces can be calculated as:

0.04 x 384 ounces = 15.36 ounces.

Rounding this amount, we get approximately 15.4 ounces, which is the quantity of the product required to prepare the 4% solution in a 3-gallon sprayer. This solution concentration ensures effective pest control while maintaining safety and efficacy.