[Question]A family bought a 24 pack of bottled water. They drank 1/3 of them on the first day and 1/2 of what was left after the first day on the second day. How many bottles of water remain after 2 days?
[Answer]After 1 day, the family drank 24 bottles * 1 / 3 = 8 bottles. Thus, 24 bottles - 8 = 16 remain. On the 2nd day they drank half of the remaining 16, so half would be leftover at the end of day 2, or 16 * 1 / 2 = 8 bottles. The answer is 8.
Q: A farmer has 51 cows. The farmer adds five new cows to its herd and then sells a quarter of the herd. How many cows does the farmer have left?
A: The farmer has 51 + 5 = 56 cows in its herd. The farmer sells 56 / 4 = 14 cows of the herd. The farmer now has 56 - 14 = 42 cows. The answer is 42.
Question: In the fall, 20,000 high school students apply to Harvard University for college. In the spring, 5% of those 20,000 students are accepted to the university. Of the students who are accepted, 90% choose to attend the university, and the other 10% choose to go to other schools. How many students choose to attend Harvard University?
Answer: The number of students accepted to the university is 20,000 * 0.05 = 1,000 students. The number of students who choose to attend the university is 1,000 * 0.9 = 900 students. The answer is 900.
[Question]Lois has 40 books. She gives a fourth of her books to her nephew. From her remaining books, she donates a third of her books to the library. Then she purchases 3 new books from the book store. How many books does Lois have now?
[Answer]Lois gives 40 / 4 = 10 books to her nephew. Then Lois has 40 - 10 = 30 books. Lois donates 30 / 3 = 10 books to the library. Then Lois has 30 - 10 = 20 books. After purchasing new books, Lois has 20 + 3 = 23 books. The answer is 23.
Q: Roxy has 7 flowering plants in her garden. She has twice as many fruiting plants as her flowering plants. On Saturday, she goes to the nursery and buys 3 flowering plants and 2 fruiting plants. On Sunday, she gives away 1 flowering plant and 4 fruiting plants to her neighbor, Ronny.  How many plants are remaining in her garden?
A: Roxy’s flowering plant count is 7. Her fruiting plant count is 7 x 2 = 14. On Saturday, her flowering plant count is 7 + 3 = 10. On Saturday, her fruiting plant count is 14 + 2 = 16. On Sunday, her flowering plant count is 10 - 1 = 9. On Sunday, her fruiting plant count is 16 - 4 = 12. Roxy’s remaining plant count in her garden is 9 + 12 = 21. The answer is 21.
Question: Laura is hosting a carwash. She will charge $5 for a car, $6 for a truck, and $7 for an SUV. They raised $100 in total. If they washed 5 SUVs and 5 trucks, how many cars did they wash?
Answer:
They earned $30 from trucks because 5 x 6 = 30. They earned $35 from SUVs because 5 x 7 = 35. They earned $35 from cars because 100 - 35 - 30 = 35. They washed 7 cars because 35 / 5 = 7. The answer is 7.