In a competition 5 marks are given for every correct answer and (-2) for every incorrect answer. Rohan answer all the questions and got (-12).If Rohan got 4 answers correct ,How many did he answered incorrectly??
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Answer:16
Step-by-step explanation:
1.Correct ans mark=4×5=20 marks
2.Marks lost= final score- correct answer score=-12-20=-32 (which is 32 marks lost)
3.number of questions incorrectly answered = marks lost ÷ marks lost per incorrect answer=-32÷-2=16
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