A fruit shop brings in a cart of fruit. It sells 15% on the first day and 35% on the second day. It sells a total of 200 kilograms in two days. How many kilograms of fruit does this cart have?
水果店运来一车水果，第一天卖出15%，第二天卖出35%，两天共卖出200千克，这车水果共有多少千克？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(3/20) + (7/20)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">200 / (1/2)</gadget>
<output>400</output>

<result>400</result>