Big John is 3 equal units and Little John is 1 unit, so the difference is 2 units.<br><br>[[model:questions/solutions/q3182.png]]<br><br>• Big − Little = 2 units → 88 kg<br>• 1 unit → 88 ÷ 2 = 44 kg<br>• Big John = 3 units → 3 × 44 = 132 kg<br><br>Big John’s mass is 132 kg.<br>Check: 132 − 44 = 88 kg, and 132 = 3 × 44. ✓