【俐安】評論
總年數=1+2+3+4+5=15101/3/1---102/2/28折舊(700,000-70,000)*5/15=210000102/3/1---103/2/28折舊(700,000-70,000)*4/15=168000103/3/1---103/12/31折舊 (700,000-70,000)*3/15*10/12=105000折舊總計210000+168000+105000=483000帳面餘額700000-483000=217000