It was a typo. It should have said Robert instead of Matt. Please help me

On a three day hike, Robert hiked twice as many miles on the first day as on the second day. On the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles on the second day as on the third day.

(a) Write and simplify an expression for the total number of miles Robert hiked.
(b) Robert hiked 6 miles on the second day. How many miles did Robert hike in all?
(c) If Carlos hiked 4 miles on the third day, which boy hiked a greater total distance? Explain.

For part (a), I wrote x (2) + 5 = x
For part (b), I wrote 6 + 5 = 11 miles
For part (c), I wrote Carlos, because 15 + 4 = 19. If this is not correct, please help me?
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R1 = 2R2
R2 = R2
R3 = 5
R = 3 R2 + 5
===========
C1 = 5
C2 = 3 C3
C3 = C3
C = 4 C3 + 5
===============
R = 3(6) + 5 = 23
C = 4(4) + 5 = 21

Sure, I can help you with that. If you made a typo and need to correct the name from "Matt" to "Robert," you have a few options depending on the context. Here's how you can correct the typo:

1. If it's a typo in a digital document or message:
- Simply edit the document or message and replace "Matt" with "Robert." This could be a text document, email, chat message, or any other digital platform that allows you to edit the text.

2. If it's a typo in a physical document:
- If the document is in print, you might need to create a revised version of the document with the correct name. This could involve printing out a new copy or using correction fluid/pen to manually correct the typo on the existing document.

3. If it's a typo in a spoken conversation:
- Politely acknowledge the mistake and correct yourself by stating, "Oops, I meant Robert, not Matt."

Remember, the specific method for correcting a typo depends on the context in which it occurred.