ISEE Mathematics Achievement Question 32: Answer and Explanation

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Question: 32

4. Two years ago a company purchased 500 dozen pencils at 40 cents per dozen. This year only 75 percent as many pencils were purchased as were purchased two years ago, but the price was 20 percent higher than the old price. What was the total cost of pencils purchased by the company this year

  • A. $180
  • B. $187.50
  • C. $240
  • D. $257.40

Correct Answer: A

Explanation:

The correct answer is (A). 500 dozen @ $0.40 per dozen = purchase of two years ago

75% of 500 dozen = 375 dozen pencils purchased this year

20% of $0.40 = $0.08 increase in cost per dozen

375 × $0.48 = $180 spent on pencils this year

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