Let number of 2 wheelers be 'x'
and 4 wheelers be 'y'
Given total number of vehicles = 200
i.e, x + y = 200 ....(1)
Given total number of wheels = 580
i.e, 2x + 4y = 580 ...(2)
By solving (1)&(2), we get
y = 90
=> x = 110
Therefore, number of two wheelers = 110
number of four wheelers = 90