There are two warehouses, A and B. Warehouse A contains 10 tons of rice. If one third of it is shipped from warehouse B to warehouse A, the weight of the rice in the two warehouses is equal. How many tons of rice did warehouse B originally store?
有甲、乙两仓库，甲仓库装有稻谷10吨，如果从乙仓库运出它的(1/3)给甲仓库，这时两仓库稻谷的重量相等，求乙仓库原来存放稻谷多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3) - (1/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 / (1/3)</gadget>
<output>30</output>

<result>30</result>