Determine if the following ratios forms a proportion. Also, write the middle terms and extreme terms if the ratios are in proportion.
$2 k g; 80 k g$ and $25 g; 625 g$

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Solution

$\frac{2 k g}{80 k g} = \frac{1}{40}$
$\frac{25 g}{625 g} = \frac{1}{25}$
The ratios are not in proportion.

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(b) 39 litres: 65 litres and 6 bottles: 10 bottles

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