Question: At 30, Anika is 4/3 the age of Maddie. What would be their average age in 15 years?
Answer: If Anika is 30 now, in 15 years, she'll be 30 + 15 = 45 years old. At 30, Anika is 4 / 3 the age of Maddie, meaning Maddie is 4 / 3 * 30 = 40 years. In 15 years, Maddie will be 40 + 15 = 55 years old. Their total age in 15 years will be 55 + 45 = 100. Their average age in 15 years will be 100 / 2 = 50. The answer is 50.
[Question]Celine collected twice as many erasers as Gabriel did. Julian collected twice as many erasers as Celine did. If they collected 35 erasers in total, how many erasers did Celine collect?
[Answer]Let x represent the number of erasers Gabriel collected. Celine collected 2 * x erasers. Julian collected 2 * x * 2 = 4 * x erasers. In total, Gabriel, Celine and Julian collected x + 2 * x + 4 * x = 7 * x erasers. 7 * x = 35. x = 5. Celine collected 5 * 2 = 10 erasers. The answer is 10.
Q: There are several cookies in the jar. Taking 1 cookie away would leave half as many in the jar as if 5 were added. How many cookies are in the jar?
A: Let C be the number of cookies. There would be C - 1 cookies. There would be (C + 5) / 2 cookies. C - 1 = (C + 5) / 2. 2(C - 1) = C + 5. 2C - 2 = C + 5. C = 7. The answer is 7.
Question: Wilfred eats 4 carrots on Tuesday and 6 carrots on Wednesday. If Wilfred wants to eat a total of 15 carrots from Tuesday to Thursday, how many carrots does Wilfred need to eat on Thursday?
Answer: Across Tuesday and Wednesday, Wilfred eats 4 + 6 = 10 carrots. On Thursday, Wilfred needs to eat 15 - 10 = 5 carrots. The answer is 5.
[Question]Bob buys 50 feet of rope. He uses a 5th of it to make a small piece of art. He takes the rest and gives half of it to the friend. After that, he cuts 2-foot sections. How many sections does he get?
[Answer]He cuts off 50 / 5 = 10 feet. So he has 50 - 10 = 40 feet left. He gives half away which means he has 40 / 2 = 20 feet. So he has 20 / 2 = 10 sections. The answer is 10.
[Question]Stacy is a high school Calculus teacher. She assigns 45 problems for homework. There are twice as many multiple choice problems as free response, and 7 more free response than true/false. How many true/false questions are there?
[Answer]
Let x represent the number of true / false questions. Free response:x + 7. Multiple choice: 2(x + 7) = 2x + 14. Total:x + x + 7 + 2x + 14 = 45. 4x + 21 = 45. 4x = 24. x = 6 true / false questions. The answer is 6.