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If 75 % of the students in a school are boys and the number of girls is 420, then the number of boys is

If 75 per cent are boys, the 420 girls make up 25 per cent, so the total is \( 420 \times 4 = 1680 \) students. The boys number \( 1680 - 420 = 1260 \), three times the…

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If 75 % of the students in a school are boys and the number of girls is 420, then the number of boys is

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If 75 per cent are boys, the 420 girls make up 25 per cent, so the total is 420×4=1680 420 \times 4 = 1680 students. The boys number 1680−420=1260 1680 - 420 = 1260 , three times the number of girls.

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