Answer the following question.
There are 20 dolphins in the aqua park. One-fourth of the dolphins are fully trained. Two-third of the remaining dolphins are currently in training and the rest will be trained next month. How many dolphins will be trained next month?
Step-by-step reasoning process: 20 x 1 / 4 = 5 dolphins are fully trained. So, 20 - 5 = 15 dolphins are not yet fully trained. 15 x 2 / 3 = 10 are currently in training. Therefore, 15 - 10 = 5 dolphins will be trained next month.
The answer is 5.

Answer the following question.
Owen bred 21 turtles, and Johanna has 5 fewer turtles than Owen. After 1 month, Owen has twice as many turtles as before and Johanna loses half of her turtles and donates the rest to Owen. How many turtles did Owen have?
Step-by-step reasoning process: Johanna had 21 turtles - 5 turtles = 16 turtles. After 1 month, Owen was left with 21 turtles * 2 = 42 turtles. After 1 month, Johanna was left with 16 turtles / 2 = 8 turtles. After Johanna's donation, Owen was left with 42 turtles + 8 turtles = 50 turtles.
The answer is 50.

Answer the following question.
To buy a book, you pay $20 for each of the first 5 books at the supermarket, and for each additional book you buy over $20, you receive a discount of $2. If Beatrice bought 20 books, how much did she pay at the supermarket?
Step-by-step reasoning process: For the first five books, the total cost is $20 * 5 = $100. For every additional book over $5, you pay $2 less, totaling to $20 - $2 = $18. Beatrice bought 20 books, so the number of books at which she received the $2 discount is 20 - 5 = 15 books. For the 15 books, Beatrice paid 15 * $18 = $270. In total, Beatrice paid $100 + $270 = $370 for the 20 books.
The answer is 370.

Answer the following question.
A 750 ml bottle of spirits costs $30.00 and has 16 servings per bottle. Most restaurants will charge $8.00 for one serving. How much money does a restaurant make on a bottle of spirits?

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.
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Step-by-step reasoning process: There are 16 servings in 1 bottle and they charge $8.00 per serving so that's 16 * 8 = $128.00. 1 bottle yields $128.00 and they spent $30.00 for the bottle so they make 128 - 30 = $98.00 on each bottle.
The answer is 98.