Mathematics, 24.06.2019 22:00, sophx

C. 14. there are 40 questions in a competitive exam. 4 mark's awarded for each correct answer while -3 marks are being deducted for each incorrect answer .if donald attempts question and answered 21 questions correctly, how many marks did he get? one of his friend getonly 15 answers correct. what will be his score?

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C. 14. there are 40 questions in a competitive exam. 4 mark's awarded for each correct answer while...