grad29 Posted July 7, 2015 Share Posted July 7, 2015 (edited) A machine works at a constant rate and can produce a bolts in 15 minutes and b bolts in c hours. Quantity A: b Quantity B: 3ac Quantity A is greater. Quantity B is greater. The two quantities are equal. The relationship cannot be determined from the information given. The following answer was provided: Plug In. If a = 5 and c = 1, then b = 20. Quantity A is greater so eliminate answers B and C. If a = 100 and c = 2, then b = 800. Quantity A is still greater. Well what if:: A = 0 B = 0 C= 1 Quantity A: B, or 0 Quantity B 3ac = 3(0)(1) = 0 So the relationship cannot be determined from the information There is nothing about the question that says A, B, or C cannot equal 0. The wording "can produce" does not necessarily mean an actual bolt has been made, it "can produce" 0 in theory. Edited July 7, 2015 by westy3789 Link to comment Share on other sites More sharing options...

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