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Artyom0805 [142]

3 years ago

5

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

s correct answers were 11, find his wrong answers.

1 answer:

nikklg [1K]3 years ago

7 0

Step-by-step explanation:

Let <em>y</em> the number of wrong answers got.

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

∴ He got 4 wrong answers.

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