ISEE Quantitative Comparisons Question 135: Answer and Explanation
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Question: 135
10. The sum of 3 consecutive integers is 33.
- A. The quantity in Column A is greater.
- B. The quantity in Column B is greater.
- C. The two quantities are equal.
- D. The relationship cannot be determined from the information given.
Correct Answer: B
Explanation:
The answer is B
Let x be the least integer. Thus, x + x + 1 + x + 2 = 33, so 3x + 3 = 33, so 3x = 30, so x = 10. Therefore, the greatest of the three consecutive integers is 12.
As Column A contains an unknown and Column B contains a known value, test the value in Column B. If the greatest of the three consecutive integers is 13, then the sum would be 11 + 12 + 13 = 36. As the problem states that the sum is actually 33, the greatest integer must be less than 13.