In a high school the number of girls makes up 20% of all the students. How many girls are there if there are 800 boys in the school ?
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In a high school the number of girls makes up 20% of all the students. How many girls are there if there are 800 boys in the school ?
20% girls implies 80% boys therefore
Making x the total number of students
Gives x = 1000, how many are girls?