请教jj147

tracyxuyang

147  V1  S：某店gross profit 从10% of selling price 降到了 20% selling price by reducing its cost. New cost: $200, 问 old cost ?
简单，列式——$225
200*（1+20%）=225



看不懂

tracyxuyang

V1  S：某店gross profit 从10% of selling price 通过降低成本升到了 20% selling price . New cost: $200, 问 old cost ?
OC=SP-OGP=0.9*SP
NC=SP-NGP=0.8*SP=200
OC=(9/8)NC=225

-- by 会员 linchaoyi (2012/1/7 10:31:47)

THANKS!明白了

linchaoyi

V1  S：某店gross profit 从10% of selling price 通过降低成本升到了 20% selling price . New cost: $200, 问 old cost ?
OC=SP-OGP=0.9*SP
NC=SP-NGP=0.8*SP=200
OC=(9/8)NC=225