设DVD进货价为X,则:(1+35%)*X*0.9-50-X=208(1.35*0.9-1)X=208+50=258X=258/0.215=1200,则该DVD进价为1200元。
设DVD进货价为X,则:(X+35%*X)*0.95-50-X=2080.2825X=208+50X=913.27433,则该DVD进价为913.27元。