A batch of apples and pears are shipped from the Dongmen fruit shop. Apples account for 3/5 of the total. After selling 250 kg of apples and 150 kg of pears, the weight of the two fruits is equal. How many kg of apples and pears are there in total?
东门水果店运来一批苹果和梨，苹果占总数的(3/5)，卖出250千克苹果和150千克梨后，两种水果重量相等，商店运来苹果和梨共多少千克？
<gadget id="calculator">250 - 150</gadget>
<output>100</output>

<gadget id="calculator">3 / 5</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>