如果中国对世界价格为200美元的自行车征收50%的关税,而没有关税时一辆自行车零部件成本是100美
What would be the effective rate of protection on bicycles in China if China places a 50 percent tariff on bicycles, which have a world price of $200, and no tariff on bike components, which together have a world price of $100?