After 4 baskets of apples are placed in a basket, the total weight of the basket is 28 kg. After pouring out 3 baskets of apples, the weight of the basket is 10 kg. How much does a basket weigh?
一个筐子放进4篮苹果后，连筐共重28千克，当倒出3篮苹果后再称，连筐共重10千克，一个筐子重多少千克．
<gadget id="calculator">28 - 10</gadget>
<output>18</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<result>4</result>