[Question]: Sam the butcher made sausage by grinding up 10 pounds of spicy meat mix, loading it into a tube casing, and creating a string of 40 sausage links. Then, she hung up the string of sausage links in her cooler. Later that evening, Brandy, Sam’s Golden Retriever, broke into the cooler and ate 12 links of sausage. After Brandy’s feast, how many ounces of sausage meat were contained in the remaining links?
[Answer]: There are 16 ounces in one pound, and thus in 10 pounds of meat mix there are 10 * 16 = 160 ounces of sausage meat. Thus, the 40 sausage links contained 160 ounces of meat, or 160 / 40 = 4 ounces per link. If Brandy ate 12 links, then 40 - 12 = 28 links remained. Thus, 28 remaining links, at 4 ounces per link, contained 28 * 4 = 112 ounces of meat.
So the answer is 112.

[Question]: Jack bought 55 apples. He wants to give 10 to his father and then equally share the remaining apples between him and his 4 friends. How many apples will each of them get?
[Answer]: The number of apples remaining after Jack gave his father 10 is 55 - 10 = 45. The share each one of his friends including him will get is 45 / 5 = 9.
So the answer is 9.

[Question]: The file, 90 megabytes in size, downloads at the rate of 5 megabytes per second for its first 60 megabytes, and then 10 megabytes per second thereafter. How long, in seconds, does it take to download entirely?
[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 first 60 megabytes take 60 / 5 = 12 seconds. There are 90 - 60 = 30 remaining megabytes. The remaining 30 megabytes take 30 / 10 = 3 seconds. And 12 + 3 = 15 seconds.
So the answer is 15.