Question

In an examination, 65% students passed in Civics and 60% in History 40% passed
in both of these subjects. If 90 students failed in History and Civics both, then what
is the total number of students ?
(RR.B. 2008)
(a) 600
(b) 650
(c) 700
(d) 750​

Answer 1

Answer:

n an examination 65% students passed in Civics and 60% in History, 40% passed in both if these subjects . If 9- students failed in History and Civics both , then what is the total number of students? ∴ 3x20= 90 ⇔ x= (90×203) = 600