The ABC Company wishes to plan its advertising strategy. There are two medias under consideration, call them Magazine I and Magazine II respectively. Magazine I has a reach of 2500 potential customers. The cost per page of advertising is Rs. 400 and Rs. 600 in Magazine I and II respectively. The firm has monthly budget of Rs. 6000. There is an important requirement that the total reach for income group under Rs. 20000 per annum should not exceed 4000 potential customers. The reach in Magazine I and II for this income group is 400 and 200 potential customers. How many pages should be brought in the two Magazines to maximize the total reach?