The three items together cost 3 × the average. Take out the skirt and blouse to leave the dress.<br><br>[[model:questions/solutions/q4679.png]]<br><br>• Total of 3 items → 3 × $28 = $84<br>• Skirt + blouse → $19 + $14 = $33<br>• Dress → $84 − $33 = $51<br><br>The dress cost $51.<br>Check: ($19 + $14 + $51) ÷ 3 = $84 ÷ 3 = $28. ✓