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Carly missed 22.5% of the questions on the last test, and the rest of the questions were correct. She had 31 questions correct. How many questions were on the test?
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Carly missed 22.5% of the questions on

the last test, and the rest of the questions
were correct. She had 31 questions
correct. How many questions were on the
test?

User Dia Kharrat
by
7.8k points

1 Answer

2 votes

Answer:

40 questions


correct \: questions = (100 - 22.5)\% \\ = 77.5\% \\ let \: total \: questions \: be \: x \\ = > 77.5\% * x = 31 \\ (77.5)/(100) * x = 31 \\ 77.5x = 3100 \\ x = 40 \\ = 40 \: questions

User Vanje
by
8.3k points
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