期末存貨高估18,500元,銷貨成本低估$18,500,淨利高估$18,500
期初存貨低估11,500元,銷貨成本低估$11,500,淨利高估$11,500
正確稅前淨利=$350,000-$18,500-$11,500=$320,000
320,000