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
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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
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
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Utsha giri 9534216678
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