1. Lingling goes to school from home to the county seat. After walking at a speed of 50 meters per minute for 2 minutes, she found that if she walked at this speed, she would be 8 minutes late, so she speeded up and walked 10 meters per minute, resulting in 5 minutes earlier. What is the distance from Lingling's home to school?

The exhibition starts at 9 o'clock, but there are still people queuing to enter. When the first audience arrived, the number of people who didn't get it was the same. If you open three entrances, there will be no queue at 9: 09. If you open five entrances, no one will line up at 9: 05. When will the first audience arrive?

3. Party A has 5 candies and Party B has 4 biscuits, worth 44 yuan. If Party A and Party B exchange boxes, everyone's belongings are of equal value. How much is a box of sugar and a bag of biscuits?