Question

In an examination 85 persent student pass in english and 80 persent pass in maths in both subject 13 persent fail.
If 195 student passed in both subject.
Find the number of total student.

Answer 1

Answer:

Total no. of student=250

Step-by-step explanation:

Let total no. of student=x

no. of student pass in english=85%of x

=0.85x

no. of student pass in maths=80%of x

=0.8x

no. of student failed in both = 13%of x

=0.13 x

no. of student who passed in both=195

0.85x+0.8x+(0.13x-195)=x

1.78x-x=195

0.78x=195

x=195*100/78

x=250

so the total no. of students=250

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