[Question]: Ariana heard the news that a new grocery store had opened up in their town, so she decided to buy some flowers for her house. She bought a bunch of 40 flowers, 2/5 of which were roses, 10 were tulips, and the rest were carnations. How many carnations did she buy?
[Answer]: The number of roses in the bunch is 2 / 5 * 40 flowers = 16 flowers. The total number of roses and tulips is 16 flowers + 10 flowers = 26 flowers. There were 40 flowers - 26 flowers = 14 carnations.
So the answer is 14.

[Question]: Tony drinks 72 ounces of water per day. He decides that to stop wasting plastic, he will buy a reusable metal bottle. If he buys an 84-ounce water bottle, how many times will he fill it each week?
[Answer]: He drinks 504 ounces of water per week because 72 x 7 = 504. He will need to fill it 6 times because 504 / 84 = 6.
So the answer is 6.

[Question]: A store puts out a product sample every Saturday. The last Saturday, the sample product came in boxes of 20. If they had to open 12 boxes, and they had five samples left over at the end of the day, how many customers tried a sample if the samples were limited to one per person?
[Answer]:

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
The store opened 12 boxes of 20 products, so they put out 20 * 12 = 240 product samples. They had 5 samples left over, so 240 - 5 = 235 samples were used. Each customer could only have one sample, so 235 * 1 = 235 customers tried a sample.
So the answer is 235.