Official Guide Explanation:
Problem Solving #54




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Solution and Metadata

Question: 54
Page: 68
Difficulty: 5 (Moderate)
Category 1: Word Problems > Mixture Problems >
Category 2: Algebra > Equations >

Explanation: Since the question is asking for "dollars per pound," we know we need to set up a fraction with those units on the top and bottom. We can find the number of dollars by multiplying the price per item times the number of items for both apricots (3x) and prunes (2y); the number of pounds is simply the total of the number of pounds of each element in the mixture (2 + 3 = 5). Putting it all together: (($)/(lb)) = ((3x + 2y)/5), choice (A).

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