The number of workers in the first workshop is three times that in the second workshop. If 20 workers move from the first workshop to the second workshop, the number of workers in the two workshops is equal. How many workers are there in each workshop?
3. The two pools * * * store 40 tons of water, 4 tons of water in Pool A and 8 tons of water in Pool B.. The tonnage of water in pool A is equal to that in pool B. How many tons were originally stored in the two pools?
4. Two piles of coal, 4.5 tons for pile A, 6 tons for pile B, 0.36 tons for pile A and 0.5 1 ton for pile B every day. In a few days, the remaining tons of coal in the two piles will be equal.
Xiaolong, Xiaohu, Xiao Fang and Xiao Yuan have 45 balls, but I don't know how many balls each person has. If we change it, Xiaolong's ball is reduced by 2, Xiaohu's ball is increased by 2, Xiao Fang's ball is increased by 1 times, and Xiao Yuan's ball is reduced by half, then the number of balls for four people is the same. How many balls will everyone have?
6. A group of tourists need to pick up and drop off by car. There are two kinds of cars, A and B. Three cars in A and four cars in B (just fully loaded) need to run five times. If you use five A-class cars and three B-class cars (just fully loaded), you only need to run four times. Which car has more passengers?
7. There are 46 pairs of rubber shoes and cloth shoes in the store * * *, each pair of rubber shoes is 7.5 yuan and each pair of cloth shoes is 5.9 yuan. After all of them are sold, rubber shoes earn more than cloth shoes 10 yuan. Q: How many pairs of rubber shoes are there?
8. A construction company has red bricks and gray bricks, and the consumption of red bricks is twice that of gray bricks. It plans to build several houses. If each house uses 80 m3 of red bricks and 30 m3 of gray bricks, then the red bricks are 40 m3 short and the gray bricks are 40 m3 left. Q: How many houses are planned to be built?
9. There are several students in the classroom. After leaving 10 girls, the number of boys is twice that of girls, and after leaving 9 boys, the number of girls is five times that of boys. Q: How many girls were there at the beginning?
10. Party A, Party B and Party C travel abroad by car. The weight of their luggage exceeds the weight they can carry for free, so they have to pay extra baggage fees. Three people * * * pay 4 yuan, while three people weigh * * * 150kg. If a person carries 150kg baggage, he should pay the baggage fee of 8 yuan in addition to the free part. Ask for the weight of luggage that each person can carry for free.
1 1. Xiaoming asks Xiao Qiang, "How many rabbits and chickens do you have?" Xiao Qiang said, "I have more rabbits than chickens, and chickens have 24 legs. Guess how many rabbits and chickens I have? "
12. Li Ming went to the flower shop to buy flowers with 6 yuan money. If you spend 1 yuan a month and spend 80 cents on jasmine, 6 yuan just runs out of money. How many pots can I buy for each kind?
13.a pencil is 7 cents, B pencil is 3 cents, and Zhang Ming bought two different pencils for 60 cents. * * * How many pencils?
14. Uncle Li went to a small shop to buy things. In the afternoon 1, he left home. He first walked a mountain road to the foot of the mountain, and then walked a flat road to the shop. Half an hour later, he left the shop and returned home along the original road, arriving home at 3: 30 in the afternoon. It is known that the flat land walks 4 kilometers per hour, the mountain land walks 3 kilometers per hour and the mountain land walks 6 kilometers per hour. Excuse me, Li Da?
15. The bus can accommodate 54 people and the car can accommodate 36 people. There are currently 378 people. How many cars do you need to get everyone on board, and there are no empty seats in each car?