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Simplify the ratio 15 to 21 is?

1 Answer

5 votes

Given the ratio;


15\colon21

To simplify the above ratio, we would change the ratio to a fraction then divide the numerator and the denominator by the same value, and till we get to the lowest possible term.

This gives,


\begin{gathered} (15)/(21)\mleft\lbrace\text{Divide numerator and denominator by 3}\mright\rbrace \\ =(5)/(7) \\ \therefore5\colon7 \end{gathered}

Therefore, the answer is

Answer: 5:7

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