RRB NTPC · Question 53
In an examination, 55% candidates passed in English, 35% candidates passed In mathematics and 20% candidates passed in both the subjects. If the total number of failed candidates in both the subjects is 1200, then find how many candidates took the exam.
Show answer & explanation
Answer: (A) 4000
Explanation
Passed in at least one subject = 55 + 35 − 20 = 70%, so 30% failed both. 30% = 1200, so 4000 candidates took the exam.