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In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.?
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In a class test, 5 marks are given for each correct answer and -2 for ...
Class 7: Finding the number of incorrect answers in a test
Understanding the problem
In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer. Aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. We need to find the number of questions Aaryav answered incorrectly.
Breaking down the problem
To solve this problem, we can follow these steps:
- Calculate Aaryav's total marks if he had answered all the questions correctly.
- Subtract the total marks obtained by Aaryav from the total marks if he had answered all the questions correctly to find the total marks lost due to incorrect answers.
- Divide the total marks lost due to incorrect answers by -2 to find the number of incorrect answers.
Solving the problem
Let's solve the problem step by step:
- The total marks that Aaryav would have obtained if he had answered all the questions correctly = 5 * (total number of questions).
- The total marks obtained by Aaryav = 5 * 10 + (-2) * (number of incorrect answers).
- So, the total marks lost due to incorrect answers = 5 * (total number of questions) - (5 * 10 + (-2) * (number of incorrect answers)).
- 30 = 5 * 10 + (-2) * (number of incorrect answers)
- Number of incorrect answers = (5 * 10 - 30) / (-2) = 5
Answer
Aaryav answered 5 questions incorrectly.
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In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.?
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In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.?.
In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class test, 5 marks are given for each correct answer and -2 for each incorrect answer aaryav answered all the questions and scored 30 marks, through he got 10 correct answer. Find the number of questions . Aaryav answered incorrect.?.
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