Mark is 18 years old. He has a little brother, John, who is 10 years younger. If John and Mark's parents are currently 5 times older than John, how old were they when Mark was born? Give the rationale and then the answer.
Let's think step by step. John is 8 years old because 18 - 10 = 8 years old. Their parents are currently 40 years old because 8 * 5 = 40. Therefore, they were 22 when Mark was born because 40 - 18 = 22 years old.. The answer is: 22.

Audrey is 7 years older than Heracles. In 3 years, Audrey will be twice as old as Heracles is now. How old is Heracles now? Give the rationale and then the answer.
Let's think step by step. Since Audrey is older than Heracles by 7 years, in 3 years he will be 10 years older than Heracles' current age. In 3 years he will be double Heracles' current age 10 * 2 = 20. Heracles is 10.. The answer is: 10.

Tabitha adds 1 serving of honey per cup of tea in the evening. She usually has 2 cups of tea before bed. She buys her honey in a 16-ounce container. If there are 6 servings of honey per ounce, how many nights will she be able to enjoy honey in her tea before bed? Give the rationale and then the answer.
Let's think step by step. She has 1 serving of honey per cup of tea and she has 2 teas at night so she needs a total of 1 * 2 = 2 servings per night. There are 6 servings in 1 ounce and she has a 16 - ounce jar of honey so that's 6 * 16 = 96 servings of honey. Her jar has 96 servings and she has 2 servings a night so 1 jar will last her 96 / 2 = 48 nights.. The answer is: 48.