Question

Find the ratio of the following (i)81 to 108 (ii) 33 km to 121 km (ii) 75cm to 25 cm.​

Answer 1

1. 9:12
2. 3/:1
3. 3:1

Step-by-step explanation:

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Answer 2

(¡) 81 to 108

=81 to 108 =

$\frac{81}{108} \div \frac{9}{9} = \frac{9}{12} \\ \frac{9}{12} \div \frac{3}{3} = \frac{3}{4}$

(Now, Change the final simplest fraction to it's ratio)

= 3/4 = 3:4

•°• the ratio of 81 to 108 = 3:4//

(¡¡) 33km to 121km

= 33 to 121 =

$\frac{33}{121} \div \frac{11}{11} = \frac{3}{11}$

(Now, Change the final simplest fraction to it's ratio)

= 3/11 = 3:11

•°• the ratio of 33km to 121 km = 3:11//

(¡¡¡) 75cm to 25cm

= 75 to 25 =

$\frac{75}{25} \div \frac{5}{5} = \frac{15}{5} \\ \frac{15}{5} \div \frac{5}{5} = \frac{3}{1}$

(Now, Change the final simplest fraction to it's ratio)

= 3/1 = 3:1

•°• the ratio of 75cm to 25cm = 3:1//

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