GMAT数学练习题及答案【2】

2022-06-07 22:43:14

  

  

  答案:E

  A photography dealer ordered 60 Model X cameras to be sold for $250 each, which represents a 20 percent markup over the dealer's initial cost for each camera. Of the cameras ordered, 6 were never sold and were returned to the manufacturer for a refund of 50 percent of the dealer's initial cost. What was the dealer's approximate profit or loss as a percent of the dealer's initial cost for the 60 cameras?

  (A) 7% loss

  (B) 13% loss

  (C) 7% profit

  (D) 13% profit

  (E) 15% profit

  答案:D

  Ofthe final grades received by the students in a certain math course, 1/5 are A's, 1/4 are B's, 1/2 are C's,and the remaining 10 grades are D's. What is the number of students in the course?

  (A) 80

  (B) 110

  (C) 160

  (D) 200

  (E) 400

  答案:D

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