Question for-a-
For a camping trip a group bought one-liter bottles of water and three-liter bottles of water, for a total of liters of water. Which equation represents this situation?
For a camping trip a group bought x one-liter bottles of water and y three-liter bottles
Medium-difficulty · SAT Math · Linear Equations in Two Variables — Writing equations from data/points. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is correct. It's given that for a camping trip a group bought one-liter bottles of water and three-liter bottles of water. Since the group bought one-liter bottles of water, the total number of liters bought from one-liter bottles of water is represented as , or . Since the group bought three-liter bottles of water, the total number of liters bought from three-liter bottles of water is represented as . It's given that the group bought a total of liters; thus, the equation represents this situation.
Choice B is incorrect and may result from conceptual errors.
Choice C is incorrect and may result from conceptual errors.
Choice D is incorrect. This equation represents a situation where the group bought three-liter bottles of water and one-liter bottles of water, for a total of liters of water.
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