sql server2008 select statement

Question

how to find max salary and min salary,employee name,and department name 

suppose we have the following database table

 

 

emp_no

emp name

branch name

subject

mark

4101      

jhon           

a1                   

mathmatex         

82.97

4122

peter

a1

mathmatex

83.09

4123

nelson

a1

physics

89.09

4129

suzan

b1

mathmatex

90.00

4125

fredrek

a1

physics

99.00

 

 

i need the result as

  

 

emp_no	emp name	branch name	subject	max	emp_no	emp name	branch name	subject	min
4129	suzan	b1	mathmatex	90	4101	jhon	a1	mathmatex	82.97
4125	fredrek	a1	physics	99	4123	nelson	a1	physics	89.09