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The proportion of boys students and girls students in a school is 2:1 . Now if the total number of students is 510 then know the number of girls.
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The proportion of boys students and girls students in a school is 2:1 . Now if the total number of students is 510 then know the number of girls.

User LxL
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4 votes
2x +1x=510
3x=510
x=510/3
x=170
User Romi Halasz
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