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In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?
- a)15
- b)16
- c)17
- d)19
- e)None of these
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
In a class of 90 students, numbers of boys are twice the number of gir...
Given:
- Total number of students = 90
- Number of boys = 2 * Number of girls
- Rani is 58th from the left end
- 20 boys are to the right of Rani
To find: Number of girls to the left of Rani
Approach:
1. Let's assume the number of girls in the class is 'x'. Then the number of boys in the class is '2x'.
2. Total number of students = Number of boys + Number of girls
90 = 2x + x
90 = 3x
x = 30
Therefore, the number of girls in the class is 30 and the number of boys is 60.
3. Rani is 58th from the left end. Hence, the number of students to the left of Rani = 58 - 1 = 57.
4. 20 boys are to the right of Rani. Hence, the number of boys to the left of Rani = 60 - 20 = 40.
5. Total number of students to the left of Rani = Number of girls to the left of Rani + Number of boys to the left of Rani
57 = Number of girls to the left of Rani + 40
Number of girls to the left of Rani = 57 - 40 = 17.
Therefore, the number of girls to the left of Rani is 17, and the correct answer is option C.
- Total number of students = 90
- Number of boys = 2 * Number of girls
- Rani is 58th from the left end
- 20 boys are to the right of Rani
To find: Number of girls to the left of Rani
Approach:
1. Let's assume the number of girls in the class is 'x'. Then the number of boys in the class is '2x'.
2. Total number of students = Number of boys + Number of girls
90 = 2x + x
90 = 3x
x = 30
Therefore, the number of girls in the class is 30 and the number of boys is 60.
3. Rani is 58th from the left end. Hence, the number of students to the left of Rani = 58 - 1 = 57.
4. 20 boys are to the right of Rani. Hence, the number of boys to the left of Rani = 60 - 20 = 40.
5. Total number of students to the left of Rani = Number of girls to the left of Rani + Number of boys to the left of Rani
57 = Number of girls to the left of Rani + 40
Number of girls to the left of Rani = 57 - 40 = 17.
Therefore, the number of girls to the left of Rani is 17, and the correct answer is option C.
Community Answer
In a class of 90 students, numbers of boys are twice the number of gir...
Total number of students in the class = 90
number of boys in the class = 2x = 60
number of girls in the class = x = 30
2x + x = 90
3x = 90
x = 30
rani's position = 58
number of people who should be actually to the right of Rani = 32
number of boys to the right of Rani = 20
number of girls to the right of Rani = 12
number of girls to the left of Rani
= total number of girls in the class - girls to the right of Rani - Rani
= 30 - 12 - 1
= 17.
number of boys in the class = 2x = 60
number of girls in the class = x = 30
2x + x = 90
3x = 90
x = 30
rani's position = 58
number of people who should be actually to the right of Rani = 32
number of boys to the right of Rani = 20
number of girls to the right of Rani = 12
number of girls to the left of Rani
= total number of girls in the class - girls to the right of Rani - Rani
= 30 - 12 - 1
= 17.
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In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer?
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In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer? for LR 2025 is part of LR preparation. The Question and answers have been prepared according to the LR exam syllabus. Information about In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for LR 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer?.
In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer? for LR 2025 is part of LR preparation. The Question and answers have been prepared according to the LR exam syllabus. Information about In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for LR 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class of 90 students, numbers of boys are twice the number of girls. Rani is 58 from the left end and there are 20 boys to the right of Rani, then the number of girls to the left of Rani?a)15b)16c)17d)19 e)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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