Management Aptitude Test Feb 2012 Paper

A manufacturer of a certain item can sell all he can produce at the selling price of ₹ 60 each . It costs him ₹ 40 in materials and labour to reduce each item and he has overhead expenses of ₹ 3000 per week in order to operate the plant. The number of units he should produce and sell in order to make a profit of at least ₹ 1000 per week , is