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In a school 3/7of them are girls .If there are 240 boys find the number of girls in the school |
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Answer» Here is your answer--- Let the number of Students in a school be x. THUS,Number of Girls = 3/7 of the TOTAL Students = 3/7 of x = 3x/7 We know, Number of Boys + Number of Girls = Total Students. 240 + 3x/7 = x 240 = x - 3x/7 240 = (7X - 3x) /7 [Taking L.C.M.] 240 × 7 = 4x x = 60 × 7 x = 420 Total number of Students in a school is 420. Thus, Number of Girls = 3/7 × x = 3/7 × 420 = 90 Thus, the number of Girls in a school is 90. Hope it HELPS. |
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