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In the collage of 40 student the ratio between no of boys and girls is 7:2. if the no of girl raised by 50 and the ratio of boy and girls comes to be 3:1.,then find the increase in no of boys.

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In the collage of 40 student the ratio between no of boys and girls is 7:2. if the no of girl raised by 50 and the ratio of boy and girls comes to be 3:1.,then find the increase in no of boys

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see refer to the attachment

ur answer is in this picture

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i hope its help u

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