Boys = 1 unit, girls = 4 units. The 24 more girls is the gap of 3 units. Total children = 5 units.<br><br>[[model:questions/solutions/q2284.png]]<br><br>• Girls − Boys = 3 units → 24<br>• 1 unit → 24 ÷ 3 = 8 (boys)<br>• Children = 5 units → 5 × 8 = 40<br><br>There are 40 children.<br>Check: boys 8 + girls 32 = 40, and 32 − 8 = 24. ✓