Asked by Anonymous
                In a exam  80% students passed in accountancy, 85% paased in mathematic ,75% passed in both subject. If  45 students fail in boths subject than what is the total number of students?
            
            
        Answers
                    Answered by
            Steve
            
    the number who passed either or both is
.80+.85-.75 = 0.90
So, 10% of x students failed both:
45 = 0.10x
. . .
    
.80+.85-.75 = 0.90
So, 10% of x students failed both:
45 = 0.10x
. . .
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