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GMAT Quantitative Practice, Problem Solving

Question 2

If eight pounds of macadamia nuts, priced at $6.00 per pound, are combined with twelve pounds of brazil nuts, priced at $5.00 per pound, what is the per-pound price of the resulting mixture?

  1. $5.25
  2. $5.40
  3. $5.50
  4. $5.75
  5. $5.80

Explanatory Answer

The sum of the total price of the macadamia nuts and the total price of the brazil nuts equals the total price of the mixture. Thus you can set up an algabraic equation, then solve for the per-pound mixture price (x):

equation system

The correct response is (B).