Question

5. Determine if the following ratios form a proportion:
(i) 25 cm: 1 m and 40: * 160
(ii) 39 litres : 65 litres and 6 bottles : 10 bottles
(iii) 200 mL : 2.5 L and 4:50
:​

Answer 1

( i )$\frac{25}{100} = \frac{40}{160}$ (Dividing by 25 & 40)

$\frac{1}{4} = \frac{1}{4}$

( ii )$\frac{39}{65} = \frac{6}{10}$ (Dividing by 13 & 2)

$\frac{3}{5} = \frac{3}{5}$

( iii )$\frac{200}{2500} = \frac{4}{50}$ (Dividing by 100 & 2)

& 2)

$\frac{2}{25} = \frac{2}{25}$

Hence, all the ratios are in proportion.