A and B are two buckets containing sugar water. Bucket A contains 60 kg of sugar water with a sugar content of 40%; bucket B contains 40 kg of sugar water with a sugar content of 20%. To make the sugar content of two buckets of sugar water equal, how many kilograms of sugar water should be exchanged between the two buckets? How to solve it without equation?
甲、乙两只装糖水的桶，甲桶有糖水60千克，含糖率为40%；乙桶有糖水40千克，含糖率为20%．要使两桶糖水的含糖率相等，需把两桶的糖水相互交换多少千克？不用方程怎样解？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">60 * (2/5)</gadget>
<output>24</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 * (1/5)</gadget>
<output>8</output>

<gadget id="calculator">24 + 8</gadget>
<output>32</output>

<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">32 / 100</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">60 * (8/25)</gadget>
<output>96/5 = around 19.2</output>

<gadget id="calculator">24 - (96/5)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">(24/5) / (1/5)</gadget>
<output>24</output>

<result>24</result>