The cost of two commodities, A and B, is 250 yuan. Commodity A is priced at 30% of the profit, and commodity B is priced at 20% of the profit. Later, at the request of the customer, the two products were sold at a discount of 10% of the price, still making a profit of 33.5 yuan. How much is the cost of commodity B?
甲、乙两种商品成本共250元，商品甲按30%的利润定价，商品乙按20%的利润定价．后来应顾客要求，两种商品按定价的9折出售，仍获利33.5元．乙种商品的成本是多少元？
<gadget id="calculator">33.5 - 20</gadget>
<output>13.5</output>

<gadget id="calculator">13.5 / 0.09</gadget>
<output>150</output>

<gadget id="calculator">250 - 150</gadget>
<output>100</output>

<result>100</result>