In an examination 80% of the students
passed in Mathematics and 70% passed in
English, while 10% of the students failed in
both the subjects. If 360 students passed in
both the subjects, find the total number of
students who appeared in the examination.
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Step-by-step explanation:
let total student = 100%
if 80% passed in mathematics, failed = 20%
if 75% passed in English, failed= 25%
and failed in both subject = 15%
total failed = 20+25-15 = 30% ( 15% subtracted to stop repetition of students in both subject)
if 30% failed then total passed = 70%
given 350 passed in both subject
so 70% = 350
then total 100% = (350/70)×100 = 5×100
= 500 student
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