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1. Mix 3 kg milk sugar of 7.6 yuan per kilogram, 5 kg fruit sugar of 5.4 yuan per kilogram and 4 kg crisp sugar of 6.5 yuan per kilogram to make assorted sugar. How much is the price of this assorted sugar per kilogram? 2. One workshop of Xinfeng agricultural machinery factory processes 2480 parts. Originally, it processes 100 parts per day. Actually, it is completed two days ahead of schedule. How many parts per day? 3. One workshop of Xinfeng agricultural machinery factory processes 2480 parts. Originally, it processes 100 parts a day. After 20 days of processing, it processes 120 parts a day instead. How many days can the task be completed? 4. Xiaoming's average score of four subjects was 90 before the publication of his history scores. After the publication of his history scores, his average score increased by two points. How many points did he get in the history test? 5. To build a canal, 15 people can finish 2520 meters in 24 days. According to this calculation, 10 people need to build 2100 meters. How many days does it take? 6. A team has been processing 960 cashmere sweaters for 37 days, and there are 540 left unfinished. According to this process, can we finish the task in a few days? 7. To build a road, team a will take 6 days to complete and team B will take 10 days to complete. Due to other arrangements, team a will build 3 kilometers less every day, while team B will build 2 kilometers less every day. After 4 days, how many kilometers is the road? 8. There are 2100Kg of rice and 525kg of flour in the grain processing plant, which are respectively put into jute bags and flour bags. The number of bags is the same. It is known that each bag of rice weighs 75kg more than flour. How many kg do each bag of rice and flour weigh? 9. The distance between the two cities is 1680 km. The two trains start from the two cities at the same time. After 15 hours, the two trains meet. It is known that the speed difference between the two trains is 8 km per hour. How many kilometers per hour do the two trains travel?
1. All the sugar is together
So the total amount is 12 kg, the total amount is 7.6 × 3 + 5.4 × 5 + 6.5 × 4 = 22.8 + 27 + 26 = 75.8
Then: 75.8/12 = 6.32 per kilogram
2. The original number of days to complete: 2480 / 100 = 24.8; now two days in advance is 22.8 days, so now the daily production is 2480 / / 22.8 =?
3,
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