1, Party A, Party B and Party C have 167 tons. A is 5 tons less than B, and C is 3 tons more than A. How many tons are A, B and C respectively?

2. The vegetable field is 975 hectares, and vegetables, tomatoes and celery are planted. The area ratio of vegetables to tomatoes is 3︰2, and the area ratio of tomatoes to celery is 5︰7. What are the areas of these three vegetables?

3. Villages A, B and C raised 6.5438+0.4 million yuan to run schools. Through negotiation, the proportion of capital contribution of villages A, B and C is 5: 2: 3. Ask them how much ten thousand yuan each should invest.

4. During the construction, the constructors used the concrete of No.1 Middle School, which was made of water, cement, yellow sand and gravel. The weight ratio of these four raw materials is 0.7: 1: 2: 4.7. How many kilograms of water, cement, yellow sand and gravel do you need to mix this concrete?

Xiaoming went out to travel for four days. It is known that the sum of four days is 65. What is four days?

6. Xiaohua randomly finds a number on the calendar, and finds that the sum of it and the five numbers of up, down, left and right is 85, and asks Xiaohua to find the number.

There are three days in the same column on the calendar, and the sum of the dates is 75. What was the first date?

Solve the problem with formula (2)

-distribution problem.

1. team a 15, team b 28. Now 10 cars are transferred to two teams, which makes the number of cars in team A half that of team B. How many cars should be allocated to each team?

There are fewer girls than boys in a class. If the number of girls increases by 3 and the number of boys decreases by 3, then the number of girls equals the number of boys. How many boys and girls are there?

3. There are 85 workers in a workshop, each of whom can process 16 large gears or 10 small gears on average every day. Knowing that two big gears and three small gears are matched, how should we arrange the labor force to make the products just complete?

If a classmate does five math problems every hour, he can finish them at the scheduled time. When he finished the 10 problem, the efficiency of solving the problem increased by 60%, so he not only finished it three hours in advance, but also did six more problems. How many questions does he plan to do? How many hours will it take to finish?

Xiaoli spent 18 yuan in the fruit shop and bought 6 Jin of apples and oranges. It is known that apples are 3.2 yuan per kilogram and oranges are 2.6 yuan per kilogram. How many kilograms of apples and oranges did Xiao Li buy?

6. Warehouse A has 200 tons of coal, and Warehouse B has 80 tons of coal. If warehouse A transports 15 tons per day and warehouse B transports 25 tons per day, how many days does it take for the two warehouses to store coal on average?

7. There are 50 tons of water in two pools, 5 tons in pool A and 8 tons in pool B.. At this time, the water in Pool A is 3 tons less than that in Pool B, so how many tons are there in Pool A and Pool B?

8. A team of 55 people, each digging an average of 2.5 cubic meters of soil or transporting 3 cubic meters of soil every day. In order to arrange the labor force reasonably and transport the excavated soil away in time, how should the number of people be distributed?

Solve the problem with formula (3)

-profit and loss problem workload and discount.

1. Apply a few kilograms of chemical fertilizer to a wheat field, 6 kilograms per mu, lacking 17 kilograms; The yield per mu is 5 kg, and the yield is 3 kg more. How many acres is this wheat field?