The workers used 40 workers to build the road, but actually they used 45 workers. The road is planned to be built for 90 days. How many days did it actually take?
Xiao Fang has 56 yuan deposit, and Xiaohua has 34 yuan deposit. If they withdraw the same amount of money, Xiao Fang's deposit is three times that of Xiaohua. How much did they each withdraw?
There are 94 kilograms of flour and 138 kilograms of rice in the canteen. Use 9 kilograms of flour and 9 kilograms of rice every day. After a few days, the remaining rice was three times that of flour.
There are two buckets of water. If you pour 10 kg into the first barrel, the two barrels are the same. If you pour 4 kilograms of water into the second bucket, the water in the second bucket is three times as much as that in the first bucket. How many kilograms of water is there in each bucket?
Given that (a, b)= 12, [a, c]=300, [b, c]=300, are there _ _ groups that meet the requirements?
1. Use 3, 5, 7 and 0 to form a two-digit number. The product of () multiplied by () is the largest, and the product of () multiplied by () is the smallest.
2. Some building blocks have more than 50 blocks, less than 70 blocks, one block for every 7 blocks, one block for every 9 blocks, or 1 block. How many blocks are there?
3.6 Potted flowers should be arranged in 4 rows with 3 pots in each row. How should we arrange them?
Four people from Class 4.4 (1) participated in the 4X50 relay race. How many different arrangements are there?
The sum of five consecutive even numbers is 240. What are five even numbers?
6. From A to B, someone rides a motorcycle 12 hours, and then rides a bike for 9 hours. You can ride a bike for 2 1 hour when you come back, and then ride a motorcycle for 8 hours. How long does it take to get from a to b by motorcycle?
7. There are two trains, one with a length of102m and a speed of 20m per second; The length of the train is120m, and it runs at the speed of17m per second. Two cars are driving in the same direction. How many seconds does it take from the first train to catch up with the second train to the departure of the two cars?
8. Someone walks at a speed of 2 meters per second. A train came behind, which took 10 seconds longer than him. As we all know, this train is 90 meters long. Find the speed of the train.
9. At present, two trains run in the same direction at the same time. 12 seconds later, the express train overtook the local train. The express train runs18m per second, and the local train runs10m per second. If the tails of two trains are flush and driving in the same direction at the same time, the express train will overtake the local train after 9 seconds. Find the body length of two trains.
In April 2009, the city opened "Shaoyang-Shanghai? It is understood that after the opening of the through train, our travel company will add 5/6 (unit: RMB/person) of the "Shaoyang-Shanghai" line and the through train 1300 yuan to 400 yuan, which is equivalent to the travel expenses of four people traveling to Shanghai after the opening of the through train. Try to understand before and after the through train is opened.
Both parties can process a batch of parts at the same time, and the task can be completed in 8 hours. If A does it alone, it will take 12 hours. Now Party A and Party B have cooperated for two 2/5 hours. Party A has been transferred out to do other work, and Party B continues to produce 420 parts to complete the task. How many parts are processed in Otsuichi?
3. The stock oil of Dongyou is 6 times that of Xiyou. If the two oil depots add 30 tons of oil each, the stock oil of Dongyou will be three times that of Xiyou. How many tons of oil were originally stored in these two oil depots? (East oil depot tons, west oil depot tons. )
4. Multiply a six-digit ABCDEK by E to get the number of ABCDEs. What is the original number? (Different letters stand for different numbers) The original number is.
There are four numbers A, B, C and D, and their sum is five times that of 60. A, B minus 1, C plus 4, and half of D are equal. What are a, b, c and d?