A grocery store brings in a batch of white sugar and 200 kilograms of brown sugar, and after selling 50 kilograms of white sugar and 80 kilograms of brown sugar, the remaining kilograms of brown sugar and white sugar are the same. How much is the original sugar in the food store?
食品店运进一批白糖和200千克红糖，卖出50千克白糖和80千克红糖后，剩下的红糖和白糖的千克数同样多．食品店原有白糖多少千克．
<gadget id="calculator">200 - 80</gadget>
<output>120</output>

<gadget id="calculator">120 + 50</gadget>
<output>170</output>

<result>170</result>