The study committee paid for the exercise books. She only recorded the money paid by each of the four groups. The first group was 2.61 yuan, the second group was 3.19 yuan, the third group was 2.61 yuan, and the fourth group was 3.48 yuan. She also knew the price of each exercise book Both are more than 1 jiao, how many people are there in the class?
学习委员收买练习本的钱，她只记下四组各交的钱，第一组2.61元，第二组3.19元，第三组2.61元，第四组3.48元，又知道每本练习本价格都超过1角，全班共有多少人．
<gadget id="calculator">2.61 * 2</gadget>
<output>5.22</output>

<gadget id="calculator">5.22 + 3.19 + 3.48</gadget>
<output>11.89</output>

<gadget id="calculator">11.89 / 0.29</gadget>
<output>41</output>

<result>41</result>