Asked by Anonymous
90% of all students passed in Hindi, 85% in Maths and 150 students passed in both. calculate total number of students in the school.
Answers
Answered by
Reiny
N( A or B) = N(A) + N(B) - N(A and B)
let the number of students be x
100% x = 90%x + 85% x - 150
x = .9x + .85x - 150
- .75x = -150
x = 200
There are 200 students in the school
let the number of students be x
100% x = 90%x + 85% x - 150
x = .9x + .85x - 150
- .75x = -150
x = 200
There are 200 students in the school
Answered by
Riya sankhwAr
Is very good
Answered by
Anonymous
200
Answered by
Smartty
N( A or B) = N(A) + N(B) - N(A and B)
let the number of students be x
100% x = 90%x + 85% x - 150
x = .9x + .85x - 150
- .75x = -150
x = 200
There are 200 students in the school
let the number of students be x
100% x = 90%x + 85% x - 150
x = .9x + .85x - 150
- .75x = -150
x = 200
There are 200 students in the school
Answered by
Anonymous
370
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.