Question

In an examination 80percent students passed.if 15 less had appeared and10 less passed, the ratio of passes to failures would have been 5:1,. How many students passed and how many appeared the examination

Answer 1

Answer:

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

⇒10060×x=144

⇒x=60144×100

⇒x=240

Therefore, total students is 240.

Step-by-step explanation:

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