Mr. Li, it took 2 / 3 hours to input a manuscript by computer, and it took 1 / 4 of this article. At this speed, how many hours does it take for Mr. Li to input this article?
Two hours and forty minutes
RELATED INFORMATIONS
- 1. Mr. Li used the computer to input an article. After 3 hours, he entered 1 / 3 of this article. At this speed, Mr. Li worked 8 hours and could input this article A few parts of the article
- 2. Mr. Li typed 200 words in 4 minutes. At this speed, how long does it take for him to type an article of 1800 words?
- 3. Mr. Li typed 96 words in three fourths of a minute. At this speed, he could type () words in one minute, and it took a long time to type a word( Mr. Li typed 96 words in three fourths of a minute. At this speed, he could type () words in one minute, and it took () minutes to type one word
- 4. It takes Master Wang 4 hours and master Li 6 hours to process a batch of machine parts? Don't use XY, list the formula
- 5. Master Liu processes 140 machine parts in 3 hours, and master Li processes 230 machine parts in 5 hours. Whose work efficiency is high?
- 6. The annual interest rate of a three-year treasury bond is 3%. Mr. Li bought a treasury bond of 5000 yuan, which can earn interest when it matures_____ Yuan (exempt from interest tax)
- 7. The annual interest rate of the national debt is 4%. If you subscribe to the five-year national debt of 5000 yuan, how much interest can you get when it matures
- 8. Mr. Chen bought 5000 yuan of state-owned bonds with a fixed term of three years and an annual interest rate of 2.89%. When they mature, he can get a total amount of principal and interest______ Yuan
- 9. Auntie Wang bought a five-year bond of 6000 yuan with an annual interest rate of 6.34%. How much money can she get when it matures? Thank you. It's urgent to do it!
- 10. In October 2008, Mr. Li bought a 20000 yuan five-year certificate roll bond with an annual interest rate of 5.53%. When it matures, how much is Uncle Wang's principal and interest
- 11. What reason is leakage switch often trip
- 12. The 200W light bulb runs 0.1 kwh in 23 minutes. Please help me to calculate the deviation of this meter How to calculate it accurately? Write it clearly With this meter, for example, if I use 100 kilowatts, how many kilowatts do I actually use? Theoretically, it takes half an hour to walk 0.1 kwh, but now it only takes 23 minutes. I calculate by time; 30-23 / 30 = 0.233333. Is that right? The power difference of 100 degrees is 23.333 degrees,
- 13. 1 kilowatt hour of electric energy can be used () hours for 220 V, 800 w vacuum cleaners, and () hours for 220 V, 200 W washing machines 1 kilowatt hour of electric energy can be used () hours for 220 V, 800 w vacuum cleaners, and () hours for 220 V, 200 W washing machines
- 14. A family circuit is equipped with four "220 V & nbsp; & nbsp; 40 W" lamps, one electric fan with 60 W power, one electric fan with 100 W power and one refrigerator with 100 W power?
- 15. A user has two 40W fluorescent lamps, one 80W TV set, one 120W refrigerator and one 800W rice cooker. If the average daily consumption is less than 0.5h, the electricity consumption can be saved in one month (30d) Note: there are two 40W fluorescent lamps
- 16. A user has four 40W fluorescent lamps, 140W TV and audio equipment, 120W refrigerator and 880W rice cooker Q: 1. Is it suitable for the user to use the "220V, 5A" watt hour meter? 2. If these electrical appliances are used less than half an hour per day, thousands of watts of electricity can be saved in one month (30 days)?
- 17. A user has four 40W fluorescent lamps, 140W TV and audio equipment, 120W refrigerator, and an 800W rice cooker. Question: (1) is it appropriate for the user to use the "220V, 5A" energy meter, and why? (2) The electricity charge of the residential area is 0.5 yuan / kW · h. if these electrical appliances are used less than half an hour a day on average, how much money can be saved in one month (30 days)?
- 18. Three 40W electric lamps, one 120W TV, and one 800W rice cooker, are used for 3 hours and 30 days on average How many kilowatts of electricity have you shared?
- 19. On the calculation of electric energy meter The following are the main technical parameters of a refrigerator Rated voltage 220 V rated power 120 W power consumption 1.2 kW · H / 24 h When the refrigerator works normally, the turntable of the electric energy meter turns every minute (3000r / kW · h is marked on the electric energy meter). If the compressor of the refrigerator only works for 15min each time, the compressor of the refrigerator will start every day and night
- 20. The Wang family has a refrigerator with a power of 125 watts. During the two days when the whole family goes out, only the refrigerator works automatically and intermittently (1) The electricity consumption of refrigerator in two whole days; 0 one two seven three Figure 7 (2) The actual working time of refrigerator