Mom spent 200 yuan on cosmetics, of which about 50 yuan is consumption tax, what is the tax rate?
妈妈购买化妆品用去200元，其中大约有50元是消费税，税率约为多少．
<gadget id="calculator">50 / 200</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>