hanyeonhye030 hanyeonhye030

01-12-2016
Mathematics

contestada

A multiple choice test consists of 100 questions. A correct answer is worth 2 marks, while an incorrect is worth -1 marks. If a student receives a score of 80, how many questions did this student answer incorrectly?

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armelia armelia

01-12-2016

the students got actual to problem wrong ok

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