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The Average Score Of Boys In An Examination In A School Is 71 And That Of The Girls Is 73. The Average Score Of The School Is 71.8. The Ratio Of The Number Of Boys To That Of The Girls That Appeared In The Examination Is |
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Answer»
71.8 (x+ y) = 71x + 73y 0.8x = 1.2y x:y = 12:8 which is EQUALS to 3:2 71.8 = (71x+73y)/(x+y) 71.8 (x+ y) = 71x + 73y 0.8x = 1.2y x:y = 12:8 which is equals to 3:2 |
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