Question

in a competitive exam 80 students passed in English 70 students passed in mathematics and 50 students passed in both the subjects. none of them failed in both the subjects. Find the total number of studentsc
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Answer 1

Answer:

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

⇒60/100×x=144

⇒x=144×100/60

⇒x=240

Therefore, total students is 240.

Step-by-step explanation:

Hope this helps you.