Mathematics, 23.02.2020 09:30 tdyson3p6xvtu

1. A physics contest has 30 multiple-choice
questions. A correct answer gains
4 points, while a wrong answer loses
1 point. Rolly answered every question
and scored 55 points. How many
questions did he answer correctly?

Answers: 3

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1. A physics contest has 30 multiple-choice
questions. A correct answer gains
4 points,...