Q: John decides to install a ramp in his house. He needs to get permits which cost $250. After that, he hires a contractor which costs $150 an hour and the guy works for 3 days at 5 hours per day. He also pays an inspector 80% less to make sure it is OK. How much was the total cost?
A: The contractor works for 3 * 5 = 15 hours. That means he charged 150 * 15 = $2250. The inspector charged 2250 * .8 = $1800 less. So the inspector charged 2250 - 1800 = $450. So the total amount charged was 250 + 450 + 2250 = $2950. The answer is 2950.
Question: Bobby made a big batch of soup weighing 80 kg. Each day the batch gets reduced by half. How many kg will it reach on the fourth day after he made the soup?
Answer: On the first day, the soup reduces down to 80 / 2 = 40 kg. On the second day, it reduces down to 40 / 2 = 20 kg. On the third day, it is reduced to 20 / 2 = 10 kg. And on the fourth day, it is finally down to 10 / 2 = 5 kg. The answer is 5.
[Question]The GooGoo brand of clothing manufactures two types of shirts, one with 3 buttons and the other with 5 buttons. A large department store ordered GooGoo to manufacture 200 of each type of shirt. How many buttons will the GooGoo brand use to manufacturer all of the shirts for this order?
[Answer]To make 200 of the first type of shirt, they will need 200 * 3 = 600 buttons. To make 200 of the second type of shirt, they will need 200 * 5 = 1000 buttons. To manufacture 200 each of both types of shirts, they will need to use 600 + 1000 = 1600 buttons. The answer is 1600.
Q: Mikaela was repainting her bathroom. She bought 16 containers of paint to cover the four equally-sized walls. At the last minute, she decided to put tile on one wall in the bathroom and paint flowers on the ceiling with one container of paint instead. How many containers of paint will she have left over?
A: Mikaela would use 16 / 4 = 4 containers of paint per wall. To paint 3 walls, she will use 3 * 4 = 12 containers. After using 1 container for the ceiling, she will have 16 - 12 - 1 = 3 containers of paint left over. The answer is 3.
Question: For every one dozen flowers bought, a customer gets 2 free flowers. If Maria wants to buy 3 dozens flowers, how many pieces of flowers will she have in all?
Answer: Maria has 3 x 2 = 6 free flowers from buying 3 dozens flowers. Since each dozen is equal to 12, then Maria bought 3 x 12 = 36 flowers. Hence, she has a total of 36 + 6 = 42 flowers. The answer is 42.
Q: Haley grows at the rate of 3 inches every year. If she is currently 20 inches tall, what will be her height after 10 years?
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.
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After 10 years, growing at the rate of 3 inches every year, Haley will have grown by 3 * 10 = 30 inches. If she is currently 20 inches tall, her height after 10 years will be 20 + 30 = 50 inches. The answer is 50.