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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asked Apr 11, 2022 81.5k views

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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?

Mathematics
high-school

Dia Kharrat asked

by Dia Kharrat

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1 Answer

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Answer:

40 questions

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

Vanje answered Apr 14, 2022

by Vanje

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