Come up with a question and reasoning that would justify [7] as the answer.
The question is: Marie has 98 unread messages on her phone. She decides to clear them by reading 20 messages a day. However, she also gets 6 new messages a day. How many days will it take her to read all her unread messages?
Reasoning: Marie will read 20 but gain 6 unread messages a day, so she will lower the number of messages by 20 - 6 = 14. Thus, it will take her 98 / 14 = 7 days to read all her unread messages.

Come up with a question and reasoning that would justify [16] as the answer.
The question is: Wyatt has 10 blue envelopes. He has 4 fewer yellow envelopes than blue envelopes. How many envelopes does Wyatt have in all?
Reasoning: Wyatt has 10 - 4 = 6 yellow envelopes. The total number of envelopes he has is 10 blue + 6 yellow = 16 envelopes.

Come up with a question and reasoning that would justify [45] as the answer.
The question is: In a bookstore, a book costs $5. When Sheryll bought 10 books, she was given a discount of $0.5 each. How much did Sheryll pay in all?
Reasoning: Instead of $5 each, a book costs $5 - $0.5 = $4.5 each. Sheryll paid $4.5 / book x 10 books = $45.