The fruit shop shipped 12 baskets of oranges and 12 baskets of apples, weighing a total of 300 kg. Each basket of oranges weighs 10 kg, how much does each basket of apples weigh? (solution by equation)
水果店运来12筐桔子和12筐苹果，一共重300千克．每筐桔子重10千克，每筐苹果重多少千克？(用方程解)
<gadget id="calculator">10 * 12</gadget>
<output>120</output>

<gadget id="calculator">300 - 120</gadget>
<output>180</output>

<gadget id="calculator">180 / 12</gadget>
<output>15</output>

<result>15</result>