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question：A brilliant hacker named Alex works with a businesswoman named Maria to uncover hidden information in her company's database. One day, Maria asks Alex to analyze a series of encrypted files. Each file contains a number of code lines that Alex needs to decrypt. The first file has 120 code lines, the second file has twice as many code lines as the first, and the third file has 50 fewer code lines than the second file.Once Alex decrypts 5 code lines per minute, how many minutes will it take for Alex to decrypt all the code lines from the three files?
answer：First, I need to determine the number of code lines in each of the three files.The first file has 120 code lines.The second file has twice as many code lines as the first file, so it has 2 multiplied by 120, which equals 240 code lines.The third file has 50 fewer code lines than the second file. Therefore, it has 240 minus 50, which equals 190 code lines.Next, I'll calculate the total number of code lines across all three files by adding them together: 120 plus 240 plus 190 equals 550 code lines.Alex decrypts 5 code lines per minute. To find out how many minutes it will take to decrypt all the code lines, I'll divide the total number of code lines by the decryption rate: 550 divided by 5 equals 110 minutes.
question：Dr. Thompson, a British historian specializing in the history of tea, is organizing a special exhibition on the evolution of tea consumption in England. She plans to showcase some fascinating statistics. In the year 1700, the average annual tea consumption per person in England was 1.5 kilograms. By the year 1800, this consumption had increased to 2.3 kilograms per person. Dr. Thompson wants to calculate the total tea consumption for a small village with 200 residents in 1800 and compare it to a similar village in 1700. What is the difference in total tea consumption between the two years for the village?
answer：First, I need to determine the total tea consumption for a village with 200 residents in both 1700 and 1800.In 1700, the average annual tea consumption per person was 1.5 kilograms. So, for 200 residents, the total consumption would be 1.5 kg multiplied by 200, which equals 300 kilograms.In 1800, the average annual tea consumption per person increased to 2.3 kilograms. For the same 200 residents, the total consumption would be 2.3 kg multiplied by 200, resulting in 460 kilograms.To find the difference in total tea consumption between the two years, I subtract the total consumption in 1700 from the total consumption in 1800: 460 kg minus 300 kg equals 160 kilograms.Therefore, the village consumed 160 kilograms more tea in 1800 compared to 1700.
question：Alex is a history buff who loves reading historical fiction novels, especially those set during distinct time periods. Alex decides to organize their collection of novels into three different time periods: Ancient History, Medieval Times, and the 20th Century. They have 15 novels set in Ancient History, 24 novels set in Medieval Times, and 36 novels set in the 20th Century. Alex plans to read a total of 5 novels each week. If Alex reads only novels from one time period at a time, how many weeks will it take them to finish reading all the novels from the 20th Century?
answer：First, I need to determine how many novels Alex has in the 20th Century category. According to the problem, there are 36 novels set in the 20th Century.Next, I know that Alex plans to read 5 novels each week. To find out how many weeks it will take to finish reading all 36 novels, I divide the total number of 20th Century novels by the number of novels read per week.So, 36 divided by 5 equals 7.2 weeks. Since Alex can't read a fraction of a week, I'll round up to the nearest whole number, which is 8 weeks.Therefore, it will take Alex 8 weeks to finish reading all the novels from the 20th Century.
question：Of the 3 friends, Harry has 4 times as many fish as Joe, and Joe has 8 times as many fish as Sam does. If Sam has 7 fish, how many fish does Harry have?
answer：First, I recognize that Sam has 7 fish.Next, since Joe has 8 times as many fish as Sam, I calculate Joe's fish by multiplying Sam's fish by 8.Finally, Harry has 4 times as many fish as Joe, so I multiply Joe's fish by 4 to find out how many fish Harry has.
question：Emily practices piano 3 times a week for 1.5 hours each time and continues this routine for 8 years. How many hours did she practice piano in total?
answer：First, I need to determine how many hours Emily practices piano each week. She practices 3 times a week, and each session lasts 1.5 hours.Next, I'll calculate the total number of weeks in 8 years. Since there are 52 weeks in a year, multiplying 52 by 8 gives the total number of weeks.Finally, I'll multiply the weekly practice hours by the total number of weeks to find the total hours Emily has practiced piano over 8 years.
question：Alex is a bassist who loves to explore different genres and is currently experimenting with alternative rock sounds. He has decided to practice 4 different rock songs and 3 different jazz songs each week. If each rock song takes 15 minutes to practice and each jazz song takes 20 minutes, how much time in total does Alex spend practicing these songs every week?
answer：First, I need to determine the total time Alex spends practicing rock songs each week. He practices 4 different rock songs, and each song takes 15 minutes. So, I'll multiply the number of rock songs by the time per song: 4 songs * 15 minutes = 60 minutes.Next, I'll calculate the total time spent on jazz songs. Alex practices 3 different jazz songs, with each song taking 20 minutes. Multiplying the number of jazz songs by the time per song gives: 3 songs * 20 minutes = 60 minutes.Finally, to find the total weekly practice time, I'll add the time spent on rock songs and jazz songs together: 60 minutes (rock) + 60 minutes (jazz) = 120 minutes.