Come up with a question and reasoning that would justify this answer: 30
Question and rationale: The question is: There are 45 children in a classroom. One-third of them are girls. How many boys are in the classroom?
Step-by-step reasoning process: One - third of all the kids are girls, which means 1 / 3 * 45 = 15 children. So there are 45 - 15 = 30 boys in the classroom.

Come up with a question and reasoning that would justify this answer: 2900
Question and rationale: The question is: Josh has $300 in his wallet, and $2000 invested in a business. If the business's stock price rises 30% and then he sells all of his stocks, how much money will he have in his wallet?
Step-by-step reasoning process: If the business's stock price rises 30%, then his share on the company is worth 30% multiplied by $2000 plus $2000 that he already had. That results in 30% * $2000 + $2000 = $600 + $2000 = $2600. Since he already had $300, with $2600 more he will have $300 + $2600 = $2900.

Come up with a question and reasoning that would justify this answer: 57
Question and rationale: The question is: A chocolate cake needs 3 eggs per cake. Cheesecake requires 8 eggs for each cheesecake. How many more eggs are needed for 9 cheesecakes than are needed for 5 chocolate cakes?
Step-by-step reasoning process: Eggs in cheesecakes = 8 * 9 = 72. Eggs in chocolate cake = 5 * 3 = 15. 72 - 15 = 57. Nine cheesecakes need 57 more eggs than 5 chocolate cakes.

Come up with a question and reasoning that would justify this answer: 800
Question and rationale:
The question is: Jason has a carriage house that he rents out. He's charging $50.00 per day or $500.00 for 14 days. Eric wants to rent the house for 20 days. How much will it cost him?
Step-by-step reasoning process: He wants to rent for 20 days and there is a deal if you rent for 14 days so that leaves 20 - 14 = 6 individual days. Each individual day is $50.00 and he will have 6 individual days for a total of 50 * 6 = $300.00. 14 days costs $500.00 and 6 days costs $300.00 for a total of 500 + 300 = $800.00.