Question: In eight years, Mr. Bernard will be 3 times as old as Luke is now. If Luke is 20, what is 10 years less than their average age?
Answer: If Luke is 20, he will be 20 + 8 = 28 years old in eight years. In eight years, Mr. Bernard will be 3 times as old as Luke is now, a total of 3 * 20 = 60 years old. Mr. Bernard is now 60 - 8 = 52 years old. The sum of their current ages is 52 + 20 = 72. Their average age is 72 / 2 = 36. 10 less than their average age is 36 - 10 = 26 years. The answer is 26.

Question: Jill runs a business breeding llamas. Nine of her llamas got pregnant with 1 calf, and 5 of them got pregnant with twins. After they give birth, Jill traded 8 of the calves for 2 new adult llamas. Then she sells 1/3 of her herd at the market. How many total llamas (calves and adults) does Jill have now?
Answer: The number of calves that will be born as twins is 5 * 2 = 10 calves. The total number of adults and calves before the trade is 9 + 5 + 9 + 10 = 33. Jill had 33 - 8 = 25 left for trading 8 of the claves. But, she got 2 adult llamas in return, so she now has a total of 25 + 2 = 27 llamas. She then sold 27 / 3 = 9 llamas in the market. So, Jill has 27 - 9 = 18 llamas now. The answer is 18.

Question: Aaron has four brothers. If the number of Bennett's brothers is two less than twice the number of Aaron's brothers, what is the number of Bennett's brothers?
Answer: Twice the number of Aaron's brothers is 4 * 2 = 8. Bennett has 8 - 2 = 6 brothers. The answer is 6.

Question: The total mask production was doubled every month by a company after the outbreak of Coronavirus due to increased demand. If the company produced 3000 masks in March, calculate the total mask production of July.
Answer:
If in March the company produced 3000 masks, in April, after doubling the total mask production, the company produced 3000 * 2 = 6000 masks. In May, the company doubled its total mask production to 2 * 6000 = 12000. After doubling the production for June, the company was able to produce 2 * 12000 = 24000. By July, the company was producing a total of 2 * 24000 = 48000 masks. The answer is 48000.