student pass in Maths= 77%student pass in Hindi = 66%total student pas

1.	student pass in Maths= 77%student pass in Hindi = 66%total student pass = 280total failed student = 13%how many total students are there =?
Answer» Let Total number of students = S Passed in Maths = 0.77 S Failed in Maths = S - 0.77S = 0.23S Passed in Hindi = 0.66 S Failed in Hindi = S - 0.66S = 0.34S Failed in Both = 0.13S Total Failed in Any subject = 0.23S + 0.34S - 0.13S = 0.44S Passed in both subject = S -044S = 0.56S 0.56S = 280 S = 280/0.56 S = 500 Therefore, total number of students are 500

student pass in Maths= 77%student pass in Hindi = 66%total student pass = 280total failed student = 13%how many total students are there =?

Answer»

Let Total number of students = S

Passed in Maths = 0.77 S

Failed in Maths = S - 0.77S = 0.23S

Passed in Hindi = 0.66 S

Failed in Hindi = S - 0.66S = 0.34S

Failed in Both = 0.13S

Total Failed in Any subject = 0.23S + 0.34S - 0.13S = 0.44S

Passed in both subject = S -044S = 0.56S

0.56S = 280

S = 280/0.56

S = 500

Therefore, total number of students are 500