Mathematics for IGCSE & O level - Fractions, Decimals And Percentages (Section 1 - No. 32)
If 1/5 of the students are boys, what proportion of students are girls?
1/6
4/5
1/4
5/4
Explanation
If 1/5 are boys, the rest are girls, so 1-1/5 = 4/5
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