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If R is more expensive per dose than P and T is less expensive per dose than R, which of the following must be true, according to the study, for a consumer, who wishes to buy a pain reliever with the greatest effectiveness for the amount spent per dose?

Correct Answer: P should be purchased instead of R

Explanation:

According to the question,
P > Q. S > R
T is least effective Q = R, S > Q
∴ S/P > Q = R > T
Now, it is given that P is less expensive than R and from the order, P is more effective than R. It means that P should be Purchased as it is more effective and less expensive than R


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