Question 10 Answer & Explanation - SAT Algebra

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A concrete mix is 1 part cement, 2 parts sand, 3 parts gravel. For 120 kg of concrete, how much sand?

Correct Answer: A

Choice Choice C is the correct answer.

Total Parts: $1 + 2 + 3 = 6$ parts.
Weight per part: $120 / 6 = 20$ kg.
Sand: $2 \text{ parts} \times 20 = 40$ kg.

Choice Choice D is incorrect because this is cement.

Choice Choice C is incorrect because this is gravel.

Choice Choice B is incorrect because calculation error.

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Linear Functions Set 33

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