Several simple practical problems On the drawing with a scale of 1:80, the length of the house is 10 cm and the width is 9 cm. How many square meters of tiles should I buy to lay tiles on the floor of the house?
Length = 8m. Width = 7.2m
8*7.2=57.6
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- 1. A few simple practical problems Party A and Party B work together to make a batch of parts. It takes 12 days for Party A to do it alone, and 8 days for Party B to do it alone. After 6 days for Party B to do it alone, Party A will do the rest of the tasks alone. How many days will it take to complete the task?
- 2. In the spring of 2009, influenza A (H1N1) virus spread in the United States and some other countries, and human beings had another battle with the virus. Peracetic acid is one of the disinfectants that can effectively kill avian influenza virus. 0.2% Peracetic acid solution is often used for air and ground disinfection. A farm needs to prepare 50 kg of 0.2% Peracetic acid disinfection solution, How many kilograms of 10% Peracetic acid solution is needed? How many kilograms of water should be added? Answer before 9 o'clock
- 3. To solve practical problems, The boys like the modei car 2. Are these your books Please put the boxes here 4. They go to school [at seven thirty] Practical questions 1. Xiaowei has 30 2-cent and 5-cent coins in the storage tank, which are worth 9.9 cents in total. How many coins are there in each of them? 2. Master Zhang carries 1000 glass bottles. It is stipulated that he can get 0.3 yuan for carrying one bottle, but he will not pay 0.5 yuan for breaking one bottle. After transportation, Master Zhang actually gets 260 yuan for carrying one bottle?
- 4. Several simple practical questions 1. Make a batch of small farm tools. The first workshop can process 50 pieces a day. If the second workshop does it for 10 days, it can complete the task. Now the two workshops cooperate. When this batch of tasks are completed, the second workshop has completed 80% of the total number of small farm tools 2. Party A and Party B respectively accept the same number of freight transportation tasks. After 14 days of joint transportation, team a has 64 tons left and team B has 484 tons left. It is known that the working efficiency of team B is 60% of that of team A. how many tons does team a transport every day? 3. The grain store transported 260 bags of rice and flour. After selling one twelfth of the rice, the remaining rice was 7 bags less than flour. How many bags of rice were transported in?
- 5. 1. In the physical education class of class 501, there are 34 people participating in rope skipping activities. They should be divided into five groups, at least how many more people? How many groups can they be divided into?
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- 7. There is a practical problem. It's actually very simple. It's about engineering problems The efficiency of team a is 3 / 5 of that of team B. the two teams can complete 2 / 3 of this section of road in 6 days. The rest will be completed by team B alone. How many days will it take to complete it?
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- 14. The sum of the numerator and denominator is 30. After the denominator is increased by 22, a new fraction is obtained. This fraction is reduced to one third of the simplest fraction. What is the original fraction? Better not use the equation
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