Use the units method with the difference to find the value of 1 unit.<br><br>
[[model:questions/solutions/q7229.png]]<br><br>
&bull; Apples : Oranges : Pears = 4 : 5 : 6<br>
&bull; Difference between pears and apples = 6 units - 4 units = 2 units<br>
&bull; 2 units → 60, so 1 unit → 60 ÷ 2 = 30<br>
&bull; Oranges = 5 units → 5 × 30 = 150<br><br>
There are 150 oranges.<br>
Check: Apples = 4×30 = 120, Pears = 6×30 = 180. Difference = 180 - 120 = 60. ✓