There are 4 more boys than girls in class 31, and the number of boys accounts for the whole class (8/15). How many people are there in the class?
三1班男生比女生多4人，男生人数占全班人数的(8/15)．全班有几人？
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">1 - (8/15)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(8/15) - (7/15)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">4 / (1/15)</gadget>
<output>60</output>

<result>60</result>