1. There are 25 students in the class. Rok calculated the average number of points each student achieved on a school assignment. Initially, he calculated an average of 74.5 points, but then he remembered that he had forgotten to include his own score. When he included it, he calculated an average of 75 points. How many points did Rok achieve on the school assignment? Write down your answer.
1. Since each of the 24 students achieved an average of 74.5 points, they all together achieved $24 \cdot 74.5=$ 1788 points. When Rok included his own points, he calculated an average of 75 points, so 25 students together achieved $25 \cdot 75=1875$ points. The difference $1875-1788$ represents the number of points Rok achieved. Rok achieved 87 points.

When considering 24 tasks, the total number of points is $24 \cdot 74.5=1788 \ldots \ldots \ldots \ldots \ldots \ldots \ldots . \ldots 2$ points

When considering 25 tasks, the total number of points is $25 \cdot 75=1875 \ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots . \ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots$

The difference is 87 points..........................................................................................................................................

Answer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 point