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WBCS Preliminary Examination 2015 — General Studies · Question 30 of 200

Q30
ReasoningSeating Arrangement, Ranking & Puzzles
In a class of 60 where boys are twice that of girls, Ram ranked 17th from the top. If there are 9 boys ahead of Ram, how many girls are after him in the rank?
  1. a.26
  2. b.13
  3. c.12
  4. d.33

Answer: (B) 13

Boys = $\frac{60}{3} \times 2 = 40$; Girls = 20. Ram is ranked 17th, so 16 students are ahead of him. Of those 16, 9 are boys, so 7 are girls. Girls ahead of Ram = 7, total girls = 20. Girls after Ram = $20 - 7 = 13$.

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In a class of 60 where boys are twice that of girls, Ram ranked 17t… — WBCS Preliminary Examination 2015 Q30 | Prostuti360°