(2) Renmin University has only one halal canteen, which is located in the west hall on the second floor of the central canteen of our school and is one of the canteens of the school logistics group. Students outside the school can also eat. They need to buy temporary meal cards in cash. There are 10 yuan and 50 yuan, but they have to pay 10% of the cost of this meal, that is, 10 yuan can only be spent in 9 yuan and 50 yuan in 45 yuan.