In an examination, there are 100 questions. For correct answer, 5 marks are awarded but for each wrong answer 2 marks are deducted. Which of the following marks could be obtained?
a) 192　　b) 193　　c) 194　　d) 195　　e) 196
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beat_gmat_09
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x=no of correctern5231 wrote:In an examination, there are 100 questions. For correct answer, 5 marks are awarded but for each wrong answer 2 marks are deducted. Which of the following marks could be obtained?
a) 192　　b) 193　　c) 194　　d) 195　　e) 196
y=no of incorrect
x+y=100
5x-2y= plug option answers
only A satisfies.
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akhpad
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X + Y = 100ern5231 wrote:In an examination, there are 100 questions. For correct answer, 5 marks are awarded but for each wrong answer 2 marks are deducted. Which of the following marks could be obtained?
a) 192　　b) 193　　c) 194　　d) 195　　e) 196
5X - 2Y = A Assume one of the five choices
Eliminate Y
7X = A + 200
Test for A = 192
7X = 192 + 200 = 392 = 7 * 56
Hence A
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pradeepkaushal9518
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