Mohit correctly answered $90 %$ of the questions in a Maths test contained exactly $40$ questions. How many of the questions did he answer incorrectly?

4

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10

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44

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90

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Solution

The correct option is A $4$
Total number of questions in the test $= 40$
Number of questions answered correctly $= 90 % = \frac{90}{100} \times 40 = 36$

$∴$ Number of questions answered incorrectly $= 40 - 36 = 4$

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Mohit correctly answered 90% of the questions in a Maths test contained exactly 40 questions. How many of the questions did he answer incorrectly?

The correct option is A 4Total number of questions in the test =40Number of questions answered correctly =90%=90100×40=36∴ Number of questions answered incorrectly =40−36=4

Mohit correctly answered $90 %$ of the questions in a Maths test contained exactly $40$ questions. How many of the questions did he answer incorrectly?

The correct option is A $4$
Total number of questions in the test $= 40$
Number of questions answered correctly $= 90 % = \frac{90}{100} \times 40 = 36$

$∴$ Number of questions answered incorrectly $= 40 - 36 = 4$