The larger bar is the smaller bar plus the difference of 188. Take 188 off the total to leave 2 equal units.<br><br>[[model:questions/solutions/q3220.png]]<br><br>• 2 units + 188 → 540<br>• 2 units → 540 − 188 = 352<br>• 1 unit (smaller) → 352 ÷ 2 = 176<br><br>The smaller number is 176.<br>Check: 176 + 364 = 540 and 364 − 176 = 188. ✓