Q: Jackson and Brandon both invest $500 in the stock market. Jackson's investment quadruples in value, while Brandon's is reduced to 20% of the initial value. How much more money does Jackson have than Brandon now?
A: First find the end value of Jackson's investment: $500 * 4 = $2000. Then find the end value of Brandon's investment: 20% * $500 = $100. Then subtract the value of Brandon's investment from the value of Jackson's investment to find the difference: $2000 - $100 = $1900. The answer is 1900.
Question: On Mary's birthday, her brother surprised her with $100. She spent a quarter of it on a new video game and then used a fifth of what was left on swimming goggles. How much money did she have left?
Answer: Mary spent 100 / 4 = 25 dollars on a new video game. So, after the video game purchase, Mary was left with 100 - 25 = 75 dollars. Mary then bought swimming goggles for 75 / 5 = 15 dollars. Mary had 75 - 15 = 60 dollars left. The answer is 60.
[Question]Georgie needs 3 avocados to make her grandmother's guacamole recipe. If she already had 5 avocados and her sister buys another 4 avocados, how many servings of guacamole can Georgie make?
[Answer]Altogether, Georgie has 5 + 4 = 9 avocados. She can make 9 / 3 = 3 servings of guacamole. The answer is 3.
Q: Together Felipe and Emilio needed a combined time of 7.5 years to build their homes. Felipe finished in half the time of Emilio. How many months did it take Felipe to build his house?
A: Let F = the number of years Felipe needed to build his house. Emilio = 2F. 3F = 7.5 years. F = 2.5 years. 2.5 years = 30 months. It took Felipe 30 months to build his house. The answer is 30.
Question: Five coaster vans are used to transport students for their field trip. Each van carries 28 students, 60 of which are boys. How many are girls?
Answer: There are a total of 5 vans x 28 students = 140 students. If 60 are boys, then 140 - 60 = 80 of these students are girls. The answer is 80.
Q: Mr Castiel prepared 600 boar sausages on the weekend. He ate 2/5 of them on Monday, half of the remaining on Tuesday and saved the rest for Friday. If he ate 3/4 of the remaining boar sausages on Friday, how many sausages are left?
A:
On Monday, Mr Castiel ate 2 / 5 * 600 = 240 sausages. The remaining number of sausages after he ate 240 on Monday is 600 - 240 = 360. On Tuesday, he ate half of the remaining sausages, a total of 360 / 2 = 180. The remaining number of sausages that he saved for Friday after eating 180 on Tuesday is 360 - 180 = 180. On Friday, Mr Castiel ate 3 / 4 * 180 = 135 of the sausages he had kept. The remaining number of sausages after he ate 135 on Friday is 180 - 135 = 45. The answer is 45.