After mixing 100 grams of brine with a salt content of 30% and 150% of brine with a salt content of 20%, what is the percentage of salt in the brine?
含盐量30%的盐水100克与含盐量20%的盐水150%混合后，盐占盐水的多少．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">100 * (3/10)</gadget>
<output>30</output>

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

<gadget id="calculator">150 * (1/5)</gadget>
<output>30</output>

<gadget id="calculator">30 + 30</gadget>
<output>60</output>

<gadget id="calculator">100 + 150</gadget>
<output>250</output>

<gadget id="calculator">60 / 250</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(6/25) * 1</gadget>
<output>6/25 = around 0.24</output>

<result>6/25 = around 0.24</result>