Comprehension Passage
Directions: The following line graph shows the number of students studying in school A, B and C in four different years 2000, 2001, 2002 and 2003.
If the number of students studying in School A in 2004 is 50 more than the number of students studying in School A in 2003, then find the average number of students studying in School A from 2000 to 2004.
1
220
2
280
3
260
4
230
5
320