Question
Express the following ratios in the simplest form: $13.5 : 15$

Answer

$13.5 : 15 or 135 : 150$ $HCF$ of $135$ and 1$50 = 15 135 ÷ 15 : 150 ÷ 15$ $($Dividing by $15) = 9 : 10$

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