There are 40 questions in a competitive exam. 4 marks are awarded for each correct answer, while 3 marks are is deducted for each incorrect answer. If Donald answered 21 questions correctly, how many marks did he get?
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Answer:
Correct answer Marks = 21 x 4 = 84
Incorrect answer marks = 19 x -3 = -57
Total marks = 84 -57 = 27 marks
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27 marks is the answer
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