Saturday, 16 March 2019

In an examination, 80% of the candidates passed in English, 85% passed in Mathematics, while 75% passed in both English and Mathematics. If 45 candidates failed in both subjects, the total number of candidates is (a) 450 (b) 420 (c) 400 (d) 460

In an examination, 80% of the candidates passed in English, 85% passed in Mathematics, while 75% passed in both English and Mathematics. If 45 candidates failed in both subjects, the total number of candidates is 
(a) 450 
(b) 420 
(c) 400 
(d) 460