There are 50 students in a class, 72% of the class can swim, and 3/5 of the 25 girls can swim, so what percentage of the boys can swim?
某班有学生50人，会游泳的占全班人数的72%，女生25人中有(3/5)会游泳，那么男生中有百分之几会游泳？
<gadget id="calculator">72 / 100</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">50 * (18/25)</gadget>
<output>36</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">25 * (3/5)</gadget>
<output>15</output>

<gadget id="calculator">36 - 15</gadget>
<output>21</output>

<gadget id="calculator">50 - 25</gadget>
<output>25</output>

<gadget id="calculator">21 / 25</gadget>
<output>21/25 = around 0.84</output>

<result>21/25 = around 0.84</result>