Q: Vince owns a hair salon and he earns $18 per head. His monthly expenses are $280 for rent and electricity and 20% of his earnings are allocated for recreation and relaxation. He will save the rest. How much does he save if he serves 80 customers a month?
A: This month, Vince earns 80 x $18 = $1440. The amount he allocates for recreation and relaxation is 20 / 100 x $1440 = $288. Thus, his monthly expenses is $280 + $288 = $568. Therefore, he saves $1440 - $568 = $872. The answer is 872.
Question: During a school meeting, 300 students and 30 teachers are seated but 25 students are standing. How many attended the school meeting?
Answer: There are 300 students + 30 teachers = 330 people that are seated. Since there 25 students that are standing, so 330 + 25 = 355 people who attended the school meeting. The answer is 355.
[Question]Harper has 15 rubber bands. His brother has 6 fewer rubber bands than he has. How many rubber bands do they have together?
[Answer]His brother has 15 rubber bands - 6 rubber bands = 9 rubber bands. They have 15 rubber bands + 9 rubber bands = 24 rubber bands together. The answer is 24.
Q: In four years, Annika will be three times as old as Hans. If Hans is now 8 years old, how old is Annika now?
A: In four years, Hans will be 8 + 4 = 12 years old. Then Annika will be 12 * 3 = 36 years old. So Annika right now is 36 - 4 = 32 years old. The answer is 32.
Question: Johns goes to the gym 3 times a week. He spends 1 hour each day lifting weight. Additionally, he also spends a third of his weightlifting time warming up and doing cardio each day. How many hours does he spend at the gym a week?
Answer: He spends 60 / 3 = 20 minutes warming up. So he spends 60 + 20 = 80 minutes at the gym per day. That means he spends 80 * 3 = 240 minutes at the gym. So he spends 240 / 60 = 4 hours at the gym a week. The answer is 4.
Q: A building has 300 units. Half the units are residential and the other half are split evenly between offices and restaurants. How many restaurants are there in the building?
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
There are 300 / 2 = 150 units for offices and restaurants. There are 150 / 2 = 75 restaurants in the building. The answer is 75.