In a propane-to-air ratio of 1:24, what percentage of the mixture is air?

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Prepare for the Maine Propane Tank Setter Test. Study with flashcards and multiple-choice questions, each accompanied by hints and explanations. Ace your exam with confidence!

Multiple Choice

In a propane-to-air ratio of 1:24, what percentage of the mixture is air?

Explanation:
Think of the ratio as 1 part propane to 24 parts air. Add them up to get the total: 1 + 24 = 25 parts. Air makes up 24 of those 25 parts, so the air fraction is 24/25 = 0.96, which is 96%. So the mixture is 96% air and 4% propane (the 1 part out of 25). The other percentages don’t fit because they don’t reflect 24 parts of air in a total of 25 parts.

Think of the ratio as 1 part propane to 24 parts air. Add them up to get the total: 1 + 24 = 25 parts. Air makes up 24 of those 25 parts, so the air fraction is 24/25 = 0.96, which is 96%. So the mixture is 96% air and 4% propane (the 1 part out of 25). The other percentages don’t fit because they don’t reflect 24 parts of air in a total of 25 parts.

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