SOLUTION: a school has 1800 boys which is 5/9 of total students find the ratio of girls to boys solution ??

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Question 895510: a school has 1800 boys which is 5/9 of total students find the ratio of girls to boys solution ??
Answer by thesvw(77) About Me  (Show Source):
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Total students = X
No. of boys = 1%2C800+=+X%2A5%2F9
X+=+360%2A9+=+3240
No. of girls = 3240 - 1800 = 1440
Girls : Boys = 1440 : 1800
144 : 180 ===> 72 : 90 ====> 36 : 45
Answer 4+%3A+5