Mathematics for IGCSE & O level - Fractions, Decimals And Percentages (Section 3 - No. 28)
If $\frac{1}{2}$ of a number is 10, then what is $\frac{1}{4}$ of that same number?
2.5
5
15
20
Explanation
If 1/2 of the number is 10, the number is 20, and 1/4 of 20 is 5.
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