Linear Programming

I need help in this question, A company employs skilled technicians, and unskilled labourers. Skilled technicians must be no more of 40% of the total number of persons employed. Skilled technicians are denoted by x and unskilled labourers by y. Which of the following inequalities express the above constraints? A. 2x/5 less than or equal to x+y B. x less than or equal to 2(x+y)/5 C. 2x/5 less than or equal to y D. x less than or equal to 2y/5 This question is from Kaplan Mock 2015.