In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers.

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asked Nov 24, 2022 135k views

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In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers.

Mathematics
college

Neoeahit asked

by Neoeahit

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1 Answer

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Explanation:

Let y the number of wrong answers got.

$11( + 4) + ( - 1)y = 40 \\ 44 - y = 40 \\ - y = - 4 \\ y = 4$

∴ He got 4 wrong answers.

Vicport answered Nov 30, 2022

by Vicport

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