An examination

In an examination 65% students passed in English and 56% in mathematics. And 25% failed in both the subjects. If 414 passed in both the subjects, then find the total number of students.

Correct answer:

n =  900

Step-by-step explanation:

r1=65%=10065=2013=0.65 r2=56%=10056=2514=0.56 r3=25%=10025=41=0.25 a=414  n=(r1 na)+(r2 na)+r3 n+a n=(0.65 n414)+(0.56 n414)+0.25 n+414  0.46n=414  n=0.46414=900  n=900

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