There are two bags of rice, A and B, and bag A contains 10 kilograms. If (1/3) is poured out from bag B to bag A, the two bags of rice will have the same weight. How many kilograms of rice did bag B originally contain?
有甲、乙两袋大米，甲袋装10千克，如果从乙袋中倒出(1/3)给甲袋，两袋米就一样重．乙袋原来装米多少千克．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 2</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

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

<result>30</result>