[Question]: While on vacation in New York, Greg went out for a lunch that cost $100. If sales tax in New York is 4% and he left a 6% tip, how much did Greg pay?
[Answer]: The sales tax is worth $100 x 4 / 100 = $4. Greg left $100 x 6 / 100 = $6 tip. So, the total cost for the tax and the tip is $4 + $6 = $10. Therefore, Greg paid $100 + $10 = $110 in all.
So the answer is 110.

[Question]: Droid owns a coffee shop. He uses 3 bags of coffee beans every morning, he uses triple that number in the afternoon than in the morning, and he uses twice the morning number in the evening. How many bags of coffee beans does he use every week?
[Answer]: Droid uses 3 x 3 = 9 bags of coffee beans in the afternoon. He uses 3 x 2 = 6 bags of coffee beans in the evening. So, he uses a total of 3 + 9 + 6 = 18 bags of coffee beans every day. Therefore, Droid uses a total of 18 x 7 = 126 bags of coffee beans every week.
So the answer is 126.

[Question]: Tommy's home is worth 25% more than he bought it for. He sells it and buys a new house that costs $500,000. If he had to take a loan for the 75% he can't pay, how much did he buy his first house for?
[Answer]:
He paid 25% of the new home price because 100 - 75 = 25. He paid $125,000 towards the new home because 500,000 x .25 = 125,000. Therefore he paid $100,000 for his first home because 125,000 / 1.25 = 100,000.
So the answer is 100000.