The purchaser buys two kinds of raw materials A and B one after another. The total quantity of raw materials A and B is the same in the two purchases. The first time to buy raw material A is the same as the second time to buy raw material B. The second time is 50% more than the first time. Known Buy 16 tons of raw material A for the first time, and know that the unit price of raw material A is twice the unit price of raw material B. How many tons of raw material B are you buying for the first time?
采购员先后购买甲乙两种原料，两次购买甲乙原料总数量相同，第一次买甲原料与第二次买乙原料数量相同，第二次比第一次用的钱多50%，已知第一次买16吨甲原料，又知甲原料是乙原料单价的2倍，问第一次买乙原料多少吨？
<gadget id="calculator">32 * 1.5</gadget>
<output>48</output>

<gadget id="calculator">48 - 16</gadget>
<output>32</output>

<gadget id="calculator">2 - 1.5</gadget>
<output>0.5</output>

<gadget id="calculator">32 / 0.5</gadget>
<output>64</output>

<result>64</result>