Q: After working out for 3 hours, three friends go out for lunch. Adam spends two-thirds as much money on lunch as Rick. Rick and Jose eat lunch of the same price. If Jose ate lunch worth $45, what is the cost of lunch for all three?
A: Since Rick and Jose's lunch cost was the same, Adam spent 2 / 3 * 45 = $30 on his lunch. The three friends ate food worth 30 + 45 + 45 = $120. The answer is 120.

Q: There are 3 meatballs on each spaghetti plate. If Theresa's 3 sons each eat two-thirds of the meatballs on their respective plates, how many meatballs are still left on their plates altogether?
A: Total meatballs on the plates 3 x 3 = 9. If two - thirds are eaten, one - third remaining on the plates is 9 / 3 = 3. The answer is 3.

Q: Theo, Mason, and Roxy are siblings. Theo drinks 8 cups of water every day. Mason drinks 7 cups of water. Roxy drinks 9 cups of water every day. In one week, how many cups of water do the siblings drink together?
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Everyday, the three siblings drink 8 + 7 + 9 = 24 cups of water. In one week, they drink a total of 24 x 7 = 168 cups of water. The answer is 168.