Q: While reading in bed with his wife Susan, Charlie heard a noise at the door. It was Sarah entering the bedroom with 4 friends. If there were also 8 people in the living room, how many people are in the house?
A: In the bedroom, there are 1 + 1 = 2 people in the house (Charlie and Susan). Sarah and four friends then entered, a total of 4 + 1 = 5 people. Together with Charlie and Susan, there are now 5 + 2 = 7 people in the bedroom. Since there are 8 more people in the living room, the total number of people in the house is 8 + 7 = 15. The answer is 15.
Question: Emma bought a loaf of bread that had a certain number of slices. Her little cousin Andy ate 3 slices from the bread at two different points in time, and then Emma decided she would make toast with the remaining slices. If she uses 2 slices of bread to make 1 piece of toast bread, how many slices were in the original loaf if she was able to make 10 pieces of toast bread and had 1 slice of bread left?
Answer: Little Andy ate 3 slices 2 times giving a total of 3 * 2 = 6 slices of bread. 1 piece of toast bread requires 2 slices of bread so 10 pieces need 10 * 2 = 20 slices of bread. There is 1 slice of bread left so in total there were 6 + 20 + 1 = 27 slices of bread in the loaf. The answer is 27.
[Question]In the beginning, Justine had 10 more rubber bands than Bailey but 2 fewer bands than Ylona. Bailey decided to give two bands each to Justine and Ylona so that he is left with only 8 rubber bands. How many rubber bands did Ylona have in the beginning?
[Answer]Bailey gave 2 + 2 = 4 bands. So Bailey had 8 + 4 = 12 bands in the beginning. Justine had 12 + 10 = 22 bands in the beginning. Thus, Ylona had 22 + 2 = 24 bands in the beginning. The answer is 24.
Q: Erin runs her own launderette and needs to cash in the change from the machines. There are 80 quarters and 100 dimes in every machine in the launderette. When Erin empties all of the machines and cashes in the change, she has a total of $90. She had no money before she emptied the machines and each machine held the same amount of money. How many machines are in the launderette?
A: There are 4 quarters in a dollar so in quarters, each machine holds 80 quarters / 4 = $20. There are 10 dimes in a dollar so in dimes, each machine holds 100 dimes / 10 = $10. Each machine therefore holds $20 in quarters + $10 in dimes = $30. So Erin must therefore have $90 total income / $30 income per machine = 3 machines. The answer is 3.
Question: Nadia is learning to play the piano. She normally makes 3 mistakes per 40 notes and can play about 60 notes a minute.  If she plays for 8 minutes how many mistakes will she make on average?
Answer: She plays 480 notes because 8 x 60 = 480. This is 12 blocks of 40 notes because 480 / 40 = 12. She makes 36 mistakes because 12 x 3 = 36. The answer is 36.
Q: There are 30 fish in the tank. One third of them are blue, and half of the blue fish have spots. How many fish in the tank are blue, spotted fish?
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 30 / 3 = 10 blue fish. There are 10 / 2 = 5 blue spotted fish. The answer is 5.