The ratio of the number of boys to that of girls in a village is 3 : 2. If 30% of boys and 70% of girls appeared in an examination, the ratio of the number of villagers, appreared in the examination to that not appeared in the same examination is
Options:
A . 1 : 1
B . 27 : 23
C . 23 : 27
D . 9 : 14
Answer: Option C Answer: (c)Boys in the village = 3xGirls in the village = 2xVillagers who appeared in the examination = ${3x × 30}/100 + {2x × 70}/100$= ${9x}/10 + {14x}/10 = {23x}/10$Villagers who did not appear in the examination = ${3x × 70}/100 + {2x × 30}/100$= ${21x}/10 + {6x}/10 = {27x}/10$Required ratio = ${23x}/10 : {27x}/10$ = 23 : 27
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