Sum of X, Y, Z = Average × 3 = 24 × 3 = 72.<br>
Ratio X : Y : Z = 2 : 5 : 1, so total units = 2 + 5 + 1 = 8 units.<br><br>
[[model:questions/solutions/q4675.png]]<br><br>
&bull; 8 units = 72<br>
&bull; 1 unit = 72 ÷ 8 = 9<br>
&bull; X = 2 units = 2 × 9 = 18<br>
&bull; Y = 5 units = 5 × 9 = 45<br>
&bull; Z = 1 unit = 1 × 9 = 9<br><br>
Final Answer: X = 18, Y = 45, Z = 9<br>
Check: 18 + 45 + 9 = 72. 72 ÷ 3 = 24. ✓