Come up with a question and reasoning that would justify this answer: 21
Question and rationale: The question is: Janina spends $30 each day for rent and uses $12 worth of supplies daily to run her pancake stand. If she sells each pancake for $2, how many pancakes must Janina sell each day to cover her expenses?
Step-by-step reasoning process: Janina spends $30 + $12 = $42 each day for her pancake stand. She must sell $42 / $2 = 21 pancakes each day to cover her expenses.

Come up with a question and reasoning that would justify this answer: 8
Question and rationale: The question is: In a classroom there are 30 students. 1/3 of them are boys. Among the girls, 40% own dogs, 20% own a cat, and the rest have no pets. How many girls in the class have no pet?
Step-by-step reasoning process: 2 / 3 students are girls because 1 - (1 / 3) = 2 / 3. 20 students are girls because 30 x (2 / 3) = 20. 40% of the girls don't have any pets because 100 - 40 - 20 = 40. 8 girls in class have no pets because 20 x .4 = 8.

Come up with a question and reasoning that would justify this answer: 41
Question and rationale: The question is: Vlad is 6 feet, 3 inches tall. His younger sister is 2 feet, 10 inches tall. How many inches taller is Vlad than his sister?
Step-by-step reasoning process: Vlad = 6 ft * 12 in / ft + 3 = 75 inches. Sister = 2 ft * 12 in / ft + 10 = 34 inches. 75 - 34 = 41 inches. Vlad is 41 inches taller than his sister.

Come up with a question and reasoning that would justify this answer: 11000
Question and rationale:
The question is: James decides to replace his car. He sold his $20,000 car for 80% of its value and then was able to haggle to buy a $30,000 sticker price car for 90% of its value. How much was he out of pocket?
Step-by-step reasoning process: He sold his car for 20000 * .8 = $16,000. He bought the new car for 30,000 * .9 = $27,000. That means he was out of pocket 27,000 - 16,000 = $11,000.