Answer the following 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?
Step-by-step reasoning process: Caleb has put 27 + 14 = 41 yellow and red candles. So, he used 79 - 41 = 38 blue candles.
The answer is 38.

Answer the following question.
A busy port has 4 cruise ships and twice as many cargo ships. The number of sailboats is 6 more than the cargo ships and seven times more than fishing boats. How many vessels are there on the water?
Step-by-step reasoning process: There are 4 x 2 = 8 cargo ships. There are 8 + 6 = 14 sailboats. There are 14 / 7 = 2 fishing boats. There are 4 + 8 + 14 + 2 = 28 vessels on the water.
The answer is 28.

Answer the following question.
Joey wants to buy the latest released pair of designer High Jump basketball sneakers. He plans to mow 3 neighbors’ lawns for $8 a lawn, sell 2 collectible figures to his friends for $9 each, and work an after-school job for 10 hours at $5 per hour. If his earnings just cover the price of the High Jump sneakers, how much do the shoes cost?
Step-by-step reasoning process: Joey will earn 3 * $8 = $24 mowing his neighbors’ lawns. He will earn 2 * $9 = $18 selling his collectable figures. He will earn 10 * $5 = $50 at his after - school job. The sneakers cost $24 + $18 + $50 = $92.
The answer is 92.

Answer the following question.
Trevor is currently 11 years old and his older brother is 20 years old. How old will Trevor be when his older brother is three times as old as Trevor is now?

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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Step-by-step reasoning process: When Trevor is 11, his older brother will be 11 x 3 = 33 years old. Trevor’s older brother is 20 - 11 = 9 years older than Trevor. Since Trevor is 9 years younger, Trevor will be 33 - 9 = 24 years old.
The answer is 24.