total list price : $755
Chain discount 5 /2 /1
Discount1 = 755 x 5% = 755 x (5/100) = $37.75
Net price = 755-37.75 = 717.25
Dicount 2= 717.25 x 2% = $14.345
Net price = 717.25-14.345 = 702.905
Discount 3= 702.905 x 1% = $7.02
Total discount : 37.75+14.345+7.02 = $59.12