Q: Brennan was researching his school project and had to download files from the internet to his computer to use for reference. After downloading 800 files, he deleted 70% of them because they were not helpful. He downloaded 400 more files but again realized that 3/5 of them were irrelevant. How many valuable files was he left with after deleting the unrelated files he downloaded in the second round?
A: The number of non - valuable files Brennan downloaded in the first round is 70 / 100 * 800 = 560 files. The number of valuable files Brennan downloaded in the first round is 800 - 560 = 240. When he downloaded 400 new files, there were 3 / 5 * 400 = 240 non - useful files, which he deleted again. The total number of valuable files he downloaded in the second round is 400 - 240 = 160. To write his research, Brennan had 160 + 240 = 400 useful files to reference to write his research. The answer is 400.
Question: Kimberley, Ela, and Houston all are sent to collect firewood by their grammy. Kimberley collects ten pounds of firewood, and Houston collects 12 pounds of firewood. If the three of them managed to collect a total of 35 pounds of firewood, how many pounds were collected by Ela?
Answer: Kimberley and Houston collected 10 + 12 = 22 pounds of firewood. You can find how much Ela collected by subtracting that amount from the total amount collected: 35 - 22 = 13 pounds. The answer is 13.
[Question]Maria has 4 dimes, 4 quarters, and 7 nickels in her piggy bank. Her mom gives her 5 quarters. How much money, in dollars, does Maria have now?
[Answer]Maria has 4 + 5 = 9 quarters. The number of dollars from the quarters is 9 * $0.25 = $2.25. The number of dollars from the dimes is 4 * $0.10 = $0.40. The number of dollars from the nickels is 7 * $0.05 = $0.35. The total number of dollars is $2.25 + $0.40 + $0.35 = $3. The answer is 3.
Q: Paddington has 40 more goats than Washington. If Washington has 140 goats, how many goats do they have in total?
A: If Washington has 140 goats, Washington has 140 + 40 = 180 goats. In total, they have 140 + 180 = 320 goats. The answer is 320.
Question: In April, Tank gathered 10 more Easter eggs than Emma in their first round of egg hunt. However, Emma gathered twice as many eggs as Tank in their second round of egg hunt, while Tank's total number of eggs in the second round was 20 less than the number she had gathered in the first round. If the total number of eggs in the pile they were collecting with 6 other people was 400 eggs, and Emma gathered 60 eggs in the second egg hunt round, find the number of eggs that the 6 other egg hunters collected?
Answer: Tank's total number of eggs in the second round was 60 / 2 = 30 since Emma gathered twice as many eggs as Tank in their second round of egg hunt. The total number of eggs that Emma and Tank gathered in the second round was 60 + 30 = 90. Tank's total number of eggs in the second round was 20 less than the number she had gathered in the first round, meaning she had gathered 30 + 20 = 50 eggs in the first round of egg hunt. Tank gathered 10 more Easter eggs than Emma in their first round of egg hunt, meaning Emma collected 50 - 10 = 40 eggs. The total number of eggs Emma and Tank collected in the first round was 40 + 50 = 90. In the two rounds, Emma and Tank gathered 90 + 90 = 180 eggs. If the total number of eggs in the pile they were collecting with 6 other people was 400 eggs, the six other people gathered 400 - 180 = 220 eggs. The answer is 220.
Q: Chris is trying to sell his car for $5200 and has gotten two price offers. One buyer offered to pay the full price if Chris would pay for the car maintenance inspection, which cost a tenth of Chris’s asking price. The other buyer agreed to pay the price if Chris replaced the headlights for $80 and the tires for three times as much. What is the difference between the amounts Chris will earn from the two offers?
A:
Chris would earn 5200 - 5200 / 10 = 5200 - 520 = $4680 from the first buyer. He would earn 5200 - 80 - 80 * 3 = 5200 - 80 * 4 = 5200 - 320 = $4880 from the second buyer. The difference between Chris’s earnings would be 4880 - 4680 = $200. The answer is 200.