Q: Danny has a huge fish tank that contains 94 guppies, 76 angelfish, 89 tiger sharks, and 58 Oscar fish. If he sells 30 guppies, 48 angelfish, 17 tiger sharks, and 24 Oscar fish. How many fish will remain?
A: There were 94 + 76 + 89 + 58 = 317 fishes in the tank. The fish to be sold is 30 + 48 + 17 + 24 = 119. Therefore, Danny will be left with 317 - 119 = 198 fishes. The answer is 198.

Q: Nancy's ex owes her child support. He's supposed to pay 30% of his income each year. For 3 years, he made $30,000/year, then he got a 20% raise for the next four years. If he's only ever paid $1,200, how much does he owe her?
A: First find how much money the ex made during the first 3 years by multiplying his annual earnings by the number of years: 3 years * $30,000 / year = $90,000 / . Then find how much his raise was by multiplying his salary by the percentage raise: $30,000 / year * 20% = $6,000 / year. Then add the raise to his original salary to find his new salary: $6,000 / year + $30,000 / year = $36,000 / year. Then find how much he made working at the new salary by multiplying it by the 4 years he worked: 4 years * $36,000 / year = $144,000. Add his earnings from the three years and the four years to find his total earnings: $144,000 + $90,000 = $234,000. Now multiply his total earnings by 30% to find how much he was supposed to pay: $234,000 * 30% = $70,200. Now subtract the amount he paid from this number to find how much he owes: $70,200 - $1,200 = $69,000. The answer is 69000.

Q: Tire repair for each tire costs $7, plus another 50 cents for sales tax. If Juan needs all 4 tires repaired, how much is the final cost?
A:
Juan pays 4 * 7 = 28 dollars for all four tire repairs. Juan pays 0.50 * 4 = 2 dollars in sales tax for all four tire repairs. Juan pays a total of 28 + 2 = 30 dollars. The answer is 30.