Study the table carefully answer the questions given below.

In six years, the number of students taking admissions and leaving from the five different colleges which were founded in 2010 is given below.

 

	A		B		C		D		E
College Years	A	L	A	L	A	L	A	L	A	L
2010	1125	---	1050	---	1200	---	1600	---	1550	---
2011	330	220	450	250	420	230	440	250	350	225
2012	290	210	325	215	400	250	400	260	380	230
2013	345	200	285	210	360	225	395	220	410	220
2014	380	250	300	190	340	240	420	225	440	210
2015	350	230	340	220	410	280	460	240	425	215

 

Note:
A - admitted
L - Leaving

What is the average number of students studying in all the five colleges in 2012?