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Mathematics, 08.10.2021 14:00 cutebabyolivia

each pupil had to answer 50 questions. 5 points were given for each correct answer and 4 points were deducted for each incorrect answer. Jack answered all 50 questions and he scored 97. How many questions did he answer correctly?

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each pupil had to answer 50 questions. 5 points were given for each correct answer and 4 points were...

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