Come up with a question and reasoning that would justify [24] as the answer.
The question is: 12 archeology students and 4 teachers went on a field trip to a dinosaur museum. Student tickets cost $1 each, and adult tickets cost $3 each. How much did the museum tickets cost in all?
Reasoning: The cost of the 12 student tickets is 12 * $1 = $12. The cost of the 4 teacher tickets is 4 * $3 = $12. Adding the cost of the student and teacher tickets, the museum tickets cost $12 + $12 = $24 in total.

Come up with a question and reasoning that would justify [20] as the answer.
The question is: If Jenna has twice as much money in her bank account as Phil does, and Phil has one-third the amount of money that Bob has in his account, and Bob has $60 in his account, how much less money does Jenna have in her account than Bob?
Reasoning: If Phil has one - third of the amount that Bob does, that means he has $60 / 3 = $20 in his account. Since Jenna has twice as much money as Phil, that means she has $20 * 2 = 40 in her account. Since Bob has $60 in his account, that means he has $60 - $40 = $20 more than Jenna.

Come up with a question and reasoning that would justify [28] as the answer.
The question is: Carla can cook a batch of waffles in 10 minutes and chicken-fried steak in 6 minutes. How long will it take her to cook 3 steaks and a batch of waffles?
Reasoning: First find the total cook time for the steaks: 3 steaks * 6 minutes / steak = 18 minutes. Then add the waffles' cook time to find the total cook time: 18 minutes + 10 minutes = 28 minutes.