SSC Government Jobs Exams Numerical Ability Permutation and Combination

in an examination,the average marks obtained by students whio passed was x%,while the average of thoes who failed was y%.the average marks of student taking the exam was z%.find in terms of x,y,&z the percetage of students taking the exam who failed.

Read Solution (Total 1)

Passed Failed Overall
Percentage x y z
No of students ratio z-y x-z
So, total number of students who took the exam = (z-y)+ (x-z)= x-y
Failed students = x-z
Required percentage = (x-z)/(x-y) *100
11 years agoHelpfull: Yes(1) No(3)

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