The weight ratio of the two bags of sugar from A to B is 4:1. If 10 grams are taken out of bag A and put into bag B, the weight ratio of the two bags of sugar from A to B is 7:5. What is the sum of the weight of the two bags of sugar in grams?
甲乙两包糖的重量比是4：1，如果从甲包取出10克放入乙包后，甲乙两包糖的重量比是7：5，那么，两包糖的重量之和是多少克？
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(4/5) - (7/12)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">10 / (13/60)</gadget>
<output>600/13 = around 46.153846</output>

<result>600/13 = around 46.153846</result>