Consider the Q and A. Q: Aaron, Henry's brother, is 15 years old. Henry's sister is three times as old as Aaron. Henry is four times as old as his sister. What's the combined age of the siblings?
A: 240
What is the step-by-step reasoning process?
Step-by-step reasoning process: If Aaron is 15 years old, and his sister is 3 times as old as him, then the sister is 3 * 15 = 45 years old. Together, Aaron and his sister have a total age of 45 + 15 = 60 years. Henry is four times as old as the sister, meaning he is 45 * 4 = 180 years old. The three siblings together have a total age of 60 + 180 = 240 years.

Consider the Q and A. Q: There are 24 toys in the box and ¼ of them are action figures. The remaining toys are all dolls. How many dolls are there?
A: 18
What is the step-by-step reasoning process?
Step-by-step reasoning process: Since there are 24 toys in the box, there are ¼ * 24 = 6 action figures. Because the rest of the toys are dolls, there are 24 - 6 = 18 dolls in the box.

Consider the Q and A. Q: A snake's head is one-tenth its length. If a snake is 10 feet long, calculate the length of the rest of its body minus the head.
A: 9
What is the step-by-step reasoning process?
Step-by-step reasoning process: A snake's head is one - tenth its length, which is 1 / 10 * 10 = 1 foot. Since the snake's head is 1 foot, the rest of its body is 10 - 1 = 9 feet long.

Consider the Q and A. Q: A shady restaurant is charging customers gratuities after taxes without them being aware. If my total bill was $140, the sales tax in my city is 10%, I ordered a NY Striploin for $80, and I ordered a glass of wine for $10, how much did they charge me for gratuities?
A: 41
What is the step-by-step reasoning process?
Step-by-step reasoning process:

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
The total bill before taxes or gratuities was $80 for the steak + $10 for the wine = $80 + $10 = $90. If the tax is 10%, then the taxes paid were $90 * 10% = $9. That means that the total bill before gratuities was $90 + $9 = $99. If the final bill was $140, then you were charged $140 - $99 = $41 for gratuities.