Come up with a question and reasoning that would justify [3] as the answer.
The question is: James buys 3 packs of candy. He pays with a $20 bill and gets $11 change. How much did each pack of candy cost?
Reasoning: The candy cost 20 - 11 = $9. So he pays 9 / 3 = $3 per candy.

Come up with a question and reasoning that would justify [128] as the answer.
The question is: Mary just arrived at the beach. She has 4 times as many towels as Frances does. The total weight of their towels is 60 pounds. If Mary has 24 towels, how much do Frances's towels weigh in ounces?
Reasoning: Frances has 24 / 4 = 6 towels. They have 24 + 6 = 30 towels. Each towel weighs 60 / 30 = 2 pounds. Frances’s towels weigh a total of 2 * 4 = 8 pounds. Frances’s towels weigh a total of 8 * 16 = 128 ounces.

Come up with a question and reasoning that would justify [600] as the answer.
The question is: Michael has a lot of matchsticks at home and decides to use them to make miniature models. As he is about to start crafting, he has second thoughts and decides to only use half of his pile of matchsticks. He creates 30 matchsticks houses. If he has now used all of the matchsticks he intended to and each matchstick house uses 10 matchsticks, how many matchsticks did Michael have originally?
Reasoning: Michael has used a total of 30 matchstick houses * 10 matchsticks per matchstick house = 300 matchsticks. As he only used half of his collection for crafting, he must have originally had 300 matchsticks * 2 = 600 matchsticks.