The ratio of girls to boys in the class is 1:3. In an exam, the average score of boys is 80, and the average score of the whole class is 82. What is the average score of girls?
全班女生和男生的人数比是1：3．一次考试，男生平均分是80，全班的平均分是82，女生平均分是多少分．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">82 * 4</gadget>
<output>328</output>

<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">328 - 240</gadget>
<output>88</output>

<gadget id="calculator">88 / 1</gadget>
<output>88</output>

<result>88</result>