For a 1.5% solution, how many ounces of product should be mixed with two gallons of water?

Study for the Private Applicator Agricultural Pest Control Test with a variety of questions and explanations. Prepare effectively for your certification exam!

Multiple Choice

For a 1.5% solution, how many ounces of product should be mixed with two gallons of water?

Explanation:
The question tests how to determine how much concentrate to add to water to reach a desired percentage concentration. You’re aiming for a 1.5% solution, so the product should make up 1.5% of the final mixture. A common practical approach is to treat the amount of product added as 1.5% of the water volume, neglecting the small volume the product itself adds to the total. Two gallons of water is 256 ounces, so the product needed is 0.015 × 256 = 3.84 ounces. When you round to the nearest tenth, that becomes 3.8 ounces. Note: a slightly more exact calculation that accounts for the product’s own volume would solve x = 0.015(256 + x) and give about 3.90 ounces, which rounds to 3.9 ounces. The typical answer uses the simpler approximation, yielding 3.8 ounces.

The question tests how to determine how much concentrate to add to water to reach a desired percentage concentration. You’re aiming for a 1.5% solution, so the product should make up 1.5% of the final mixture.

A common practical approach is to treat the amount of product added as 1.5% of the water volume, neglecting the small volume the product itself adds to the total. Two gallons of water is 256 ounces, so the product needed is 0.015 × 256 = 3.84 ounces. When you round to the nearest tenth, that becomes 3.8 ounces.

Note: a slightly more exact calculation that accounts for the product’s own volume would solve x = 0.015(256 + x) and give about 3.90 ounces, which rounds to 3.9 ounces. The typical answer uses the simpler approximation, yielding 3.8 ounces.

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