Mathematics for IGCSE & O level - Fractions, Decimals And Percentages (Section 3 - No. 2)
If $\frac{1}{3}$ of a number is 15, what is the number?
5
30
45
60
Explanation
If 1/3 of a number is 15, the whole number is 3 times 15, which is 45.
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