Simplify the three-part ratio by dividing all numbers by their HCF.<br><br>
&bull; Pineapple : Peach : Apple = \(250 : 50 : 350\)<br>
&bull; HCF of 250, 50 and 350 is 50.<br>
&bull; \(250 \div 50 = 5\), \(50 \div 50 = 1\), \(350 \div 50 = 7\)<br>
&bull; Ratio = \(5 : 1 : 7\)<br><br>
Final Answer: 5 : 1 : 7