The total $100 + $250 = $350 never changes. In the end Fiona has $30 more than Sebastian, so removing the $30 leaves two equal parts.<br><br>[[model:questions/solutions/q3239.png]]<br><br>• Total → $100 + $250 = $350<br>• 2 equal parts → $350 − $30 = $320<br>• 1 part (Sebastian) → $320 ÷ 2 = $160<br>• Fiona → $160 + $30 = $190<br><br>Fiona has $190 left.<br>Check: Sebastian $160 + Fiona $190 = $350; $190 − $160 = $30. ✓