IBPS RRBs Officer Scale I and II 13 Sep 2015 Paper

(1) Number of failures in theexam = x (let)
⇒ Number of successful students = 50 – x
According to the question,52(50 – x) + 16x = 50 × 34
⇒ 2600 – 52x + 16x = 1700
⇒2600 – 36x = 1700
⇒36x = 2600 – 1700 = 900
⇒ x =

900

36

= 25