A travel agent has to fly 1000 people and 35000 kg of baggage from Hong Kong to Shanghai. Two type of aircraft are available:

"A" which takes 100 people and 2000 kg of baggage, or "B" which takes 60 people and 3000 baggage. he can use no more than 16 aircraft altogether. write dowm three inegualities which must be satisfied if he uses x ofAand Y ofB