John decides to get a new phone number and it ends up being a recycled number. He used to get 20 text messages a day. Now he is getting 55. Assuming the number of texts his friends send has not changed, how many text messages per week is he getting that are not intended for him?
Let's think: He is getting an extra 55 - 20 = 35 text messages per day. So he is getting an extra 35 * 7 = 245 text messages per week.. The answer is: 245.

Twenty people pre-bought plane tickets at a price of $155 per ticket. Thirty people bought their plane tickets at the gate and they each paid $200 for their ticket. How many more dollars did the people at the gate pay for their tickets than those passengers that pre-bought their tickets?
Let's think: Pre - bought: 20 people * $155 = $3100. Gate bought: 30 people * $200 = $6000. $6000 - $3100 = $2900. The passengers that paid at the gate paid $2900 more dollars than those who pre - bought their tickets.. The answer is: 2900.

John books 3 nights at a hotel room for $250 a night. He has a $100 discount. How much does he pay?
Let's think: The cost is 250 * 3 = $750. So he spends 750 - 100 = $650.. The answer is: 650.

In a forest, there are three anthills. In the first anthill, there are 100 ants, and in each next anthill, there are 20% fewer ants than in the previous one. How many ants are in the third anthill?
Let's think:

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
In the second anthill, there are 20 / 100 * 100 = 20 ants less. This means there are 100 - 20 = 80 ants in the second anthill. In the third anthill, there are 20 / 100 * 80 = 16 ants less compared to the second one. So in the third anthill, there are 80 - 16 = 64 ants.. The answer is: 64.