In a certain business, production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment i. What is p if i = 70? (1) e = 0.5 whenever i = 60 (2) p = 2.0 whenever i = 50 A. Statement (1) ALONE is sufficient, but statement (2)
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If √(3−2x)=√2x+1, then 4x^2= (A) 1 (B) 4 (C) 2 − 2x (D) 4x − 2 (E) 6x − 1 Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on
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The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers? (A)
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