Car A and Car B transport a total of 11.5 tons of goods, and the amount transported by car A is 0.5 ton less than twice that of car B. How many tons of goods is transported by car B? (solution by equation)
甲、乙两车共运货物11.5吨，甲车运的比乙车运的2倍少0.5吨，乙车运货物多少吨？(用方程解)
<gadget id="calculator">0.5 + 11.5</gadget>
<output>12</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>