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Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination is
- a)70
- b)80
- c)60
- d)75
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Meena scores 40% in an examination and after review, even though her s...
Assuming the maximum marks =100a, then Meena got 40a
After increasing her score by 50%, she will get 40a(1+50/100)=60a
Passing score = 60a+35
Post review score after 20% increase = 60a*1.2=72a
=>Hence, 60a+35+7=72a
=>12a=42 =>a=3.5
=> maximum marks = 350 and passing marks = 210+35=245
=> Passing percentage = 245*100/350 = 70
Most Upvoted Answer
Meena scores 40% in an examination and after review, even though her s...
To solve this problem, let's break it down into steps:
Step 1: Find Meena's score before the review
Meena scores 40% in the examination. Let's assume the total marks in the examination are 'x'. So her score before the review is 40% of x, which is 0.4x.
Step 2: Find Meena's score after the review
After the review, her score is increased by 50%. So her new score after the review is 0.4x + 0.5(0.4x) = 0.4x + 0.2x = 0.6x.
Step 3: Find the passing score
We know that after the review, Meena fails by 35 marks. So her post-review score is less than the passing score by 35 marks. Let's assume the passing score is 'p'. Therefore, 0.6x = p - 35.
Step 4: Find Meena's score after the further increase
Meena's score after the further increase is 20% more than her post-review score. So her new score after the further increase is 0.6x + 0.2(0.6x) = 0.6x + 0.12x = 0.72x.
Step 5: Find the passing score after the further increase
We know that her post-review score after the further increase is 7 marks more than the passing score. So the passing score after the further increase is p + 7.
Step 6: Set up an equation
Now, we can set up an equation based on the information from steps 3 and 5:
0.72x = (p + 7)
Step 7: Solve the equation
From step 3, we know that 0.6x = p - 35. We can substitute this value of p from step 3 into the equation in step 6:
0.72x = (0.6x + 7) - 35
0.72x - 0.6x = -28
0.12x = -28
x = -28 / 0.12
x = -280 / 12
x = -70 / 3
Step 8: Find the passing percentage
To find the percentage score needed for passing the examination, we need to find the passing score as a percentage of the total marks. The passing score is p = 0.6x + 35.
Substituting the value of x from step 7, we get:
p = 0.6(-70/3) + 35
p = -42 + 35
p = -7
Since the passing score cannot be negative, we need to consider the absolute value of p, which is 7. Therefore, the passing score is 7 out of -70/3, which is approximately 10%.
So, the percentage score needed for passing the examination is 10%. None of the given options (a, b, c, d) match the correct answer.
Step 1: Find Meena's score before the review
Meena scores 40% in the examination. Let's assume the total marks in the examination are 'x'. So her score before the review is 40% of x, which is 0.4x.
Step 2: Find Meena's score after the review
After the review, her score is increased by 50%. So her new score after the review is 0.4x + 0.5(0.4x) = 0.4x + 0.2x = 0.6x.
Step 3: Find the passing score
We know that after the review, Meena fails by 35 marks. So her post-review score is less than the passing score by 35 marks. Let's assume the passing score is 'p'. Therefore, 0.6x = p - 35.
Step 4: Find Meena's score after the further increase
Meena's score after the further increase is 20% more than her post-review score. So her new score after the further increase is 0.6x + 0.2(0.6x) = 0.6x + 0.12x = 0.72x.
Step 5: Find the passing score after the further increase
We know that her post-review score after the further increase is 7 marks more than the passing score. So the passing score after the further increase is p + 7.
Step 6: Set up an equation
Now, we can set up an equation based on the information from steps 3 and 5:
0.72x = (p + 7)
Step 7: Solve the equation
From step 3, we know that 0.6x = p - 35. We can substitute this value of p from step 3 into the equation in step 6:
0.72x = (0.6x + 7) - 35
0.72x - 0.6x = -28
0.12x = -28
x = -28 / 0.12
x = -280 / 12
x = -70 / 3
Step 8: Find the passing percentage
To find the percentage score needed for passing the examination, we need to find the passing score as a percentage of the total marks. The passing score is p = 0.6x + 35.
Substituting the value of x from step 7, we get:
p = 0.6(-70/3) + 35
p = -42 + 35
p = -7
Since the passing score cannot be negative, we need to consider the absolute value of p, which is 7. Therefore, the passing score is 7 out of -70/3, which is approximately 10%.
So, the percentage score needed for passing the examination is 10%. None of the given options (a, b, c, d) match the correct answer.
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Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer?
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Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer? for CLAT 2025 is part of CLAT preparation. The Question and answers have been prepared according to the CLAT exam syllabus. Information about Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for CLAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer?.
Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer? for CLAT 2025 is part of CLAT preparation. The Question and answers have been prepared according to the CLAT exam syllabus. Information about Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for CLAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Meena scores 40% in an examination and after review, even though her score is increased by 50%, she fails by 35 marks. If her post-review score is increased by 20%, she will have 7 marks more than the passing score. The percentage score needed for passing the examination isa)70b)80c)60d)75Correct answer is option 'A'. Can you explain this answer?.
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