Use the main ratio to find how many of each fruit, then apply the sub-ratios to count ripe fruits.<br><br>
&bull; Mangoes : Papayas = 5 : 4, total 45 fruits.<br>
&bull; Mangoes = \(\frac{5}{9} \times 45 = 25\); Papayas = \(\frac{4}{9} \times 45 = 20\).<br>
&bull; Ripe mangoes = \(\frac{3}{3+2} \times 25 = \frac{3}{5} \times 25 = 15\).<br>
&bull; Ripe papayas = \(\frac{1}{1+1} \times 20 = \frac{1}{2} \times 20 = 10\).<br>
&bull; Total ripe fruits = 15 + 10 = 25.<br><br>
Final Answer: 25