In one hill station train there are three categories of seats. The seats are numbered from 1 to 50 in the first class, 51 to 150 in the second class and 151 to 300 in the third class. Every December, the seat occupancy was 30% in the first class, 50% in the second class and 100% in the third class. If the per seat charges are ₹2,000, ₹1,000 and ₹500 in first class, second class and third class respectively, then the income ratio per category in December month is: