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The teacher pupil ratio in a school is 1 : 40. The number of boys is 4 5 the number of girls. There are 2400 girls. How many teachers are there in the school?
- a)108
- b)480
- c)1920
- d)4320
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The teacher pupil ratio in a school is 1 : 40. The number of boys is 4...
Given:
Teacher pupil ratio = 1 : 40
Number of boys = 4/5 * number of girls
Number of girls = 2400
To find:
Number of teachers in the school
Solution:
Let's assume the number of boys in the school to be 'b'.
Number of girls in the school = 2400
Number of boys = 4/5 * number of girls
b = 4/5 * 2400
b = 1920
Total number of students = number of boys + number of girls
Total number of students = 1920 + 2400
Total number of students = 4320
Teacher pupil ratio = 1 : 40
Therefore, for every 1 teacher, there are 40 students.
Number of teachers in the school = Total number of students/Teacher pupil ratio
Number of teachers in the school = 4320/40
Number of teachers in the school = 108
Therefore, there are 108 teachers in the school.
Answer: Option A) 108.
Teacher pupil ratio = 1 : 40
Number of boys = 4/5 * number of girls
Number of girls = 2400
To find:
Number of teachers in the school
Solution:
Let's assume the number of boys in the school to be 'b'.
Number of girls in the school = 2400
Number of boys = 4/5 * number of girls
b = 4/5 * 2400
b = 1920
Total number of students = number of boys + number of girls
Total number of students = 1920 + 2400
Total number of students = 4320
Teacher pupil ratio = 1 : 40
Therefore, for every 1 teacher, there are 40 students.
Number of teachers in the school = Total number of students/Teacher pupil ratio
Number of teachers in the school = 4320/40
Number of teachers in the school = 108
Therefore, there are 108 teachers in the school.
Answer: Option A) 108.
Community Answer
The teacher pupil ratio in a school is 1 : 40. The number of boys is 4...
Number of girls = 2400
Number of boys = (4/5) × 2400 = 1920
Total number of pupils = 2400 + 1920 = 4320
Teacher to pupil ratio = 1:40
Number of teachers = 4320 ÷ 40 = 108
Number of boys = (4/5) × 2400 = 1920
Total number of pupils = 2400 + 1920 = 4320
Teacher to pupil ratio = 1:40
Number of teachers = 4320 ÷ 40 = 108
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The teacher pupil ratio in a school is 1 : 40. The number of boys is 4 5 the number of girls. There are 2400 girls. How many teachers are there in the school?a)108b)480c)1920d)4320Correct answer is option 'A'. Can you explain this answer?
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