求列式&答案.bag was marked 40% higher than its cost at $140.问题请看补充.(a) find the cost of the bag .(b) later it was sold at an discount of 10% .find the profit percent .
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求列式&答案.bag was marked 40% higher than its cost at $140.问题请看补充.(a) find the cost of the bag .(b) later it was sold at an discount of 10% .find the profit percent .
求列式&答案.bag was marked 40% higher than its cost at $140.问题请看补充.
(a) find the cost of the bag .
(b) later it was sold at an discount of 10% .find the profit percent .
求列式&答案.bag was marked 40% higher than its cost at $140.问题请看补充.(a) find the cost of the bag .(b) later it was sold at an discount of 10% .find the profit percent .
(1+40%)x=140,x=100
140*(1-10%)=126,126-100=26
(a),标价$140，比成本高40%，则成本=140/（1+40%）=$100
(b),标价$140，折扣10%出售，则售价=$140*(1-10%)=$126，利润=$26，利润率=26/100=26%
设成本为X ： （1+40%）X=140 x=100
打折后价格 ： 140（1-10%）=126
利润 ：126-100=26
利润率 ：26/126=20.635% 利润率=利润/收入
一个袋子标记为高出其成本40%的140美元。成本是：100美元袋子以140-140*10%也就是126美元卖出利润：126-100=26
利润率：26%