There are a total of 10 questions in a math competition on rectangles in a certain class, and each question is worth 10 points. The students in the class (3/19) were all correct, the students in (13/19) got 5 questions right on average, and the rest of the students were all wrong. What is the average score of this class in this math competition.
某班矩形一次数学竞赛一共10题，每题10分．全班(3/19)的同学全对，(13/19)的同学同学平均对了5题，其余的同学全错．这个班本次数学竞赛的平均分是多少分．
<gadget id="calculator">950 / 19</gadget>
<output>50</output>

<result>50</result>