Q: John buys 5 toys that each cost $3. He gets a 20% discount. How much did he pay for everything?
A: The toys cost 5 * 3 = $15. His discount is worth 15 * .2 = $3. So he pays 15 - 3 = $12. The answer is 12.

Q: Jill likes to do small jobs online. She makes $10 a day for her first month working online, and double that per day in her second month. Her third month she makes the same amount per day as the previous month, but only works every other day. How much did she make over three months, assuming each month is 30 days long?
A: Since there are 30 days in a month and Jill makes $10 a day her first month, she makes 30 * 10 = 300 dollars her first month. She makes twice the amount of the previous month's $300 in her second month, so she makes 2 * 300 = 600 dollars her second month. She makes the same amount per day the third month, but only works half the number of days, so she makes 600 / 2 = 300 dollars a month her third month. In total, she makes 300 + 300 + 600 = 1,200 dollars. The answer is 1200.

Q: The price of a monster box of cereal is reduced by $24 after an oversupply in the market. If the initial price was $104, and Romina bought 20 of such boxes, calculate the total price she paid.
A:
If the initial price was $104, and the price of the monster box of cereal reduced by $24, the new price is $104 - $24 = $80. If Romina bought 20 such boxes, he paid 20 * $80 = $1600. The answer is 1600.