Two tests had the same maximum mark. The pass percentages in the first and the second test were 40% and 45% respectively. A candidate scored 216 marks in the second test and failed by 36 marks in that test. Find the pass mark in the first test?
Correct answer: E. None of these
- A. 136
- B. 128
- C. 164
- D. 214
- E. None of these
Explanation
The second-test pass mark is 216 marks + 36 marks = 252 marks. Since 252 marks is 45% of the maximum, the maximum is 252 / 0.45 = 560 marks, so the first-test pass mark is 40% x 560 marks = 224 marks, which is not listed; option a, 136 marks, does not use the common maximum correctly.
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Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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