Question

in an examination 30% and 35% students respectively failed in history and geography while 27% students failed in both the subjects. If the number of students passing the examination is 248. Find the total number students who appeared in the examinations

Answer 1

let total students are x

actual failed students = fail in history + fail in geography - fail in both subjects

actual failed students = 30 % + 35 % - 27 %

= 65 % - 27 %

= 38 %

so pass students are 100% - 38 % = 62 %

but it is 248

so 62 % --------- 248 students
then 100 % ---------- x students

x = 248 × 100 / 62

x = 400 students

Answer 2

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