Three varieties of rice priced at $1.25, $1.30, and $1.35 per kg are blended to be sold at $1.32 per kg. What should be the mixing ratio of these rice types?

Answer Choices

Correct answer marked below

1:2:3

1:1:2

2:1:3

1:4:5

Correct

2:2:5

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Explanation

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Official Explanation

Official

To find the mixing ratio of the three types of rice priced at $1.25, $1.30, and $1.35 per kg to achieve an average price of $1.32 per kg, we first identify the prices: A = 1.25, B = 1.30, C = 1.35. The target average price is $1.32. The deficits and surplus are calculated as…

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What this question tests

What it tests

Your ability to convert between fractions, ratios, and decimals and to reason proportionally.

Common trap

Cross-multiplying incorrectly or mixing up the ratio parts — a part:part ratio is not a fraction of the whole.