Let the number of pears be 1 unit. Apples are 1 unit + 4.<br><br>
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&bull; Total = Pears + Apples = 1 unit + (1 unit + 4) = 2 units + 4<br>
&bull; 2 units + 4 = 16<br>
&bull; 2 units = 12<br>
&bull; 1 unit = 6 (pears)<br>
&bull; Apples = 6 + 4 = 10<br>
&bull; Ratio Apples : Pears = 10 : 6 = 5 : 3<br><br>
The ratio of the number of apples to the number of pears is 5 : 3.<br>
Check: 5 + 3 = 8 parts, total = 16, each part = 2. Apples = 5x2=10, Pears = 3x2=6. 10 - 6 = 4. ✓<br><br>
Final Answer: 5 : 3