Owner of a whole sale computers shop plans to sell 2 types of computers. A desktop and portable model. If x is the number of desktops and y is the number of portable model and the shop's capacity cannot exceed 250 units. Which of the following is correct ?

$x+y = 250$ $x+y ≤ 250$ $x+y ≥ 250$ $x+y > 250$

$x+y ≤ 250$