Jorge has an equal number of baseball cards as Matias, who has 6 fewer cards than Carlos. If Carlos has 20 baseball cards, what is the total number of baseball cards the three have? Give the rationale and then the answer.
Let's think step by step. If Carlos has 20 cards, Matias has 20 - 6 = 14 baseball cards. Since Matias and Jorge have the same amount of baseball cards, the total number of cards the three have is 14 + 14 + 20 = 48 cards.. The answer is: 48.

Mia has $20 more than twice as much money Darwin has. If Darwin has $45, how much money does Mia have? Give the rationale and then the answer.
Let's think step by step. Twice the money of Darwin is 2 * $45 = $90. The money that Mia have is $20 + $90 = $110.. The answer is: 110.

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? Give the rationale and then the answer.
Let's think step by step. 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.. The answer is: 7.