The three girls have the same mass, so the total bar is 3 equal units = 114 kg.

[[model:questions/solutions/q2544.png]]

• 3 units → 114 kg
• 1 unit → 114 ÷ 3 = 38 kg

Each girl is 38 kg.
Check: 3 × 38 = 114 kg. ✓