Question: In four years, Annika will be three times as old as Hans. If Hans is now 8 years old, how old is Annika now?
Answer: 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: Caleb is baking a birthday cake for his grandfather. His grandfather is turning 79 years old. Caleb puts three colors of candles on the cake. He puts one candle for each year for his grandfather. He puts 27 yellow candles, 14 red candles and the rest are blue candles. How many blue candles did he use?
Answer: Caleb has put 27 + 14 = 41 yellow and red candles. So, he used 79 - 41 = 38 blue candles. The answer is 38.

Question: Samira is the assistant coach of a soccer team playing against one of the best teams in their league. She has four dozen water bottles filled with water in a box. In the first break of the match, the 11 players on the field each take two bottles of water from Samira's box, and at the end of the game, take one more bottle each. How many bottles of water are remaining in Samira's box?
Answer: If the box has four dozen bottles of water, there are 4 * 12 = 48 bottles of water in the box. After the first half, the 11 players take 11 * 2 = 22 bottles of water from the box. If they take 11 more bottles of water at the end of the game, the number increases to 22 + 11 = 33 bottles of water taken. Without the bottles taken, there are 48 - 33 = 15 bottles of water remaining in the box. The answer is 15.

Question: On her birthday, Avianna bought red candles and blue candles in the ratio of 5:3. If Avianna had 45 red candles on her birthday, how many blue candles did she have?
Answer:
If the ratio of red candles to blue candles Avianna bought was 5:3, then the total ratio was 5 + 3 = 8. If 5 represented 45 candles in the total ratio, then 8, the actual ratio, represents 8 * 45 = 360 divided by 5 is 360 / 5 = 72 candles. If the total number of candles was 72, then the number of blue candles is 72 candles - 45 candles = 27 candles. The answer is 27.