7. There are *** 1 100 male and female employees, all of whom can complete the same work in the same number of days; If the number of male workers and the number of female workers are reversed, it will take 36 days for all female workers to complete the work completed by all male workers in 25 days. Q: How many male and female workers are there?

8. There are two minutes. A is 5 minutes slower than the standard time every day, and B is 5 minutes faster than the standard time every day. At 0: 00 on March 15, the two clocks are just aligned. If it is known that at a certain moment, the hour hand and minute hand of clock B and clock A coincide respectively, from March 15 to this moment, the number of times that the hour hand and minute hand of clock B overlap is 6500 times more than that of clock A..

9. The number ratio of construction teams of Team 1 and Team 2 is 3: 4, and the efficiency of each team is 5: 4. Two teams accepted two projects with the same workload and conditions at the same time. As a result, Team Two finished the game nine days ahead of Team One. Later, the workers of the first and second teams formed a new team, and the rest of the workers formed a new team. Two new teams accepted two projects with the same workload and conditions at the same time. As a result, Team Two finished earlier than Team One.

1. There are two baskets of apples, 80 in the first basket and 32 in the second basket. Take 14 apples from the first basket and put them in the second basket at a time. How many times do you have to eat to make the number of apples in two baskets equal?

2. There are four classes in grade five in Chengnan Primary School, with an average of 44 students in each class, including 85 students in Class 5/kloc-0 and Class 52, 88 students in Class 52 and Class 53, and 87 students in Class 5/kloc-0 and Class 53. How many students are there in Class 54?

3. It takes 15 hours for the master to make a batch of parts alone, and 15 hours for the apprentice to do it alone. It is known that the master processes 20 more parts per hour than the apprentice. How many hours does it take for master and apprentice to process these parts together?

4. Red Star Garment Factory will process 1500 blouses, and plans to process 150 blouses every day. After three days, the work efficiency was improved, and 175 blouses were processed every day. So, how many days in advance?

On Children's Day, students made paper flowers, Xiaohua bought 7 pieces of red paper, and Xiaoying bought 5 pieces of yellow paper with the same price as red paper. The teacher divided these papers equally among Xiaohua, Xiaoying and two other students, and the other two students paid the teacher 9 yuan money. Q: How did the teacher give 9 yuan to Obana Xiaoying?