Q18. An aeroplane can carry a maximum of 200 passengers. Baggage allowed for a first class ticket is 30 kg and for an economy class ticket is 20 kg. Maximum capacity for the baggage is 4500 kg. The profit on each first class ticket is Rs 500 and on each economy class ticket is Rs 300. Determine how many tickets of each type must be sold to maximize the profit of the airline. Also find the maximum profit.

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