We have a question: Jessie invited 4 friends over to play. They made muffins for a snack and Jesse wants to divide them equally between herself and her friends. If they made 20 muffins in total, how many will each person have?
And an answer: 4
So how you got the answer?
There will be a total of 1 + 4 = 5 people who will share the muffins. Each of them will have 20 / 5 = 4 muffins.

We have a question: Mckenna starts her day at 8:00 a.m. She works in her office up to 11:00 a.m. then joins her team of developers at the conference room to talk about projects up to 13:00, from which she works for another two hours and then heads home. How many hours does Mckenna stay at work?
And an answer: 7
So how you got the answer?
From 8:00 to 11:00, Mckenna spends 11:00 - 8:00 = 3 hours at work. When she joins the developers in the conference room for the meeting, she spends an additional 13:00 - 11:00 = 2 hours at work. So far, she has spent 3 + 2 = 5 hours at work. When she works for an additional 2 hours before heading home, her total work hours become 5 + 2 = 7 hours.

We have a question: Roselyn gives Mara three times as many books as she gives Rebecca and remains with 60 books. If Rebecca received 40 books, how many books did Roselyn have before?
And an answer: 220
So how you got the answer?
If Roselyn gave Rebecca 40 books, and Mara was given three times as many books, Mara has 3 * 40 = 120 books. Rebecca and Mara's total number of books is 120 + 40 = 160 books. If Roselyn gave Mara and Rebecca her books, which is 160, then she initially had 60 + 160 = 220 books.