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9/10 of the 40 pupils in a class walk to school. 1/3 of those who walk to school are girls. Express the number of the boys who walk to school as a fraction of the class population .

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If 9/10 of the 40 pupils in a class walk to school, then it means 9/10 x 40 = 36 pupils walk to school. if a 1/3 of these are girls, I means 1/3 x 36=12 girls walk to school. This means 36 ? 12 = 24 boys walk to school. Express this as a fraction of the total and you have 24/40 or 3/5.

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Idk but I'm pretty sure there's 12 boys

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40 X 9/10 X 2/3= 24

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24

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Isn't ask great for homework

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