[Question]: Tom's brother is 4 times as old as Tom's dog. If in 6 years, Tom's brother will be 30 years, how old is Tom's dog going to be in six years?
[Answer]: If in six years Tom's brother will be 30 years old, he is currently 30 - 6 = 24 years old. Since Tom's brother is 4 times as old as Tom's dog, Tom's dog is 24 / 4 = 6 years old currently. Tom's dog will be 6 + 6 = 12 years old in six years.
So the answer is 12.

[Question]: Bill the miner discovers a vein of fool's gold. He successfully sells 8 ounces to a merchant, but when he tries to sell to the sheriff he's arrested, fined $50 and run out of town on a rail. If Bill earned $9 for every ounce of fool's gold he sold, how much money is he left with?
[Answer]: First find the total amount of money Bill made from the merchant: 8 ounces * $9 / ounce = $72. Then subtract the fine to find how much money he was left with: $72 - $50 = $22.
So the answer is 22.

[Question]: As soon as you enter the taxi, you pay a ride fee of $2. Michelle rode a taxi from her office to her home, which constitutes 4 miles. If the taxi charge per mile is $2.5, how much did pay Michelle pay in total for her ride?
[Answer]:
The taxi charge for a distance of 4 miles is 4 x $2.5 = $10. The total amount that Michelle paid for the ride was $2 + $10 = $12.
So the answer is 12.