Find the HCF of both numbers and divide each term by it.<br><br>
&bull; HCF of 24 and 80 is 8.<br>
&bull; 24 ÷ 8 = 3<br>
&bull; 80 ÷ 8 = 10<br>
&bull; Simplest form: 3:10<br><br>
Final Answer: 3:10