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Sheena’s test had 75 questions i.e., 10 on English, 30 on Reasoning and 35 on Legal Aptitude. Although she answered 70% of the English, 40% of the Reasoning and 60% - Mathematics

MCQ

Sheena’s test had 75 questions i.e., 10 on English, 30 on Reasoning and 35 on Legal Aptitude. Although she answered 70% of the English, 40% of the Reasoning and 60% of the Legal Aptitude questions correctly, she did not pass the test because she got less than 60% of the questions right. How many questions she would have needed to answer correctly to earn a 60% passing grade?

Options

  • 7

  • 6

  • 5

  • 4

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Solution

5

Explanation:

Minimum number of right questions required to clear the exam

`=75xx60/100=45` questions

Subject Total No. of questions Percent of correct question Number of questions solved correctly
English 10 70% `10xx70/100=7`
Reasoning 30 40% `30xx40/100=12`
Legal aptitude 35 60% `35xx60/100=21`

total number of right questions
= 7 + 12 + 21 = 40

Required number of question to be solved correctly = 45 − 40 = 5 questions

Concept: Percentage, Discount and Partnership (Entrance Exam)
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