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a school has 200 students. one third of the boys have blue eyes and one quarter of the girls have blue eyes. given that a total of 57 students have blue eyes how many boys attend the school |
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Answer» let number of boys attend the school be X HENCE number of girls attend the school =200-X Number of boys with blue EYES = 1/3×X = X/3 Number of girls with blue eyes = 1/4×(200-X) = 200-X/4 ATC (X/3) + (200-X/4) = 57 (4X+600-3X/12) = 57 (X+600/12) = 57 (X+600) = 57×12 X = 684 - 600 X = 84
hence number of boys attend the school = X = 84 |
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