The ratio of the amount of money between A and B is 3:1. If A gives B 0.6 yuan, the ratio of the amount of money between the two becomes 2:1; how much money do they have in total?
甲、乙两人的钱数之比是3：1，如果甲给乙0.6元，则两人的钱数的比变为2：1；两人共有多少钱？
<gadget id="calculator">12 * 0.6</gadget>
<output>7.2</output>

<result>7.2</result>