The fruit shop brings two kinds of fruits, apples and peaches, and apples account for 60% of the total number of fruits. After selling 250 kg of apples and 150 kg of peaches, the weight of the two fruits is equal. How many kilograms are the apples and peaches delivered?
水果店运来苹果和桃子两种水果，苹果占水果总数的60%．卖出250千克苹果和150千克桃子后，两种水果的重量相等．运来苹果和桃子共多少千克？
<gadget id="calculator">250 - 150</gadget>
<output>100</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">100 / (1/5)</gadget>
<output>500</output>

<result>500</result>