Math, asked by sdffc, 3 months ago

In an examination, 80% of students
passed in Maths and 70% in Science while 12%
failed in both the subjects. If 310 students passed
in both the subjects, find the total number of
students who appeared in the examination.


no spaming​

Answers

Answered by 148612
1

Student Passed in English =80%

Students failed in English=100%−80%=20%

Students passed in Maths =70%

Students failed in Maths =100%−70%=30%

Students failed in both =10%

Total failed students = Failed in English + failed in Math − Common

Total fail students =20%+30%−10%=40%

If 40% failed then 60% will be passed.

Let total students be x.

Hence, 60% of x=144

100

60

×x=144

⇒x=

60

144×100

⇒x=240

Therefore, total students is 240.

Answered by over58
0

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