[Question]Ursula is working at a marketing firm. She created a 30-second long commercial. Her boss told her that this commercial is too long to air and told her to shorten the commercial by 30%. How long will this commercial be after Ursula makes the desired changes?
[Answer]Ursula's boss want's the commercial to be 30 / 100 * 30 = 9 seconds shorter. After Ursula makes the desired changes, the ad is going to be 30 - 9 = 21 seconds long. The answer is 21.

[Question]Stefan goes to a restaurant to eat dinner with his family. They order an appetizer that costs $10 and 4 entrees that are $20 each. If they tip 20% of the total for the waiter, what is the total amount of money that they spend at the restaurant?
[Answer]The total cost of the entrees is 4 * $20 = $80. The total cost of the dinner is $80 + $10 = $90. The tip is $90 * 0.20 = $18. The total cost with tip is $90 + $18 = $108. The answer is 108.

[Question]Kobe and Pau went to a restaurant. Kobe ordered five pieces of fried chicken, and Pau ordered twice as much fried chicken as Kobe did. If they order another set of fried chicken, how many pieces of fried chicken will Pau have eaten in all?
[Answer]Pau ordered 5 x 2 = 10 fried chickens in total. Therefore, Pau ate 10 x 2 = 20 pieces of fried chicken. The answer is 20.

[Question]Tina buys 3 12-packs of soda for a party. Including Tina, 6 people are at the party. Half of the people at the party have 3 sodas each, 2 of the people have 4 and 1 person has 5. How many sodas are left over when the party is over?
[Answer]
Tina buys 3 12 - packs of soda, for 3 * 12 = 36 sodas. 6 people attend the party, so half of them is 6 / 2 = 3 people. Each of those people drinks 3 sodas, so they drink 3 * 3 = 9 sodas. Two people drink 4 sodas, which means they drink 2 * 4 = 8 sodas. With one person drinking 5, that brings the total drank to 5 + 9 + 8 = 22 sodas. As Tina started off with 36 sodas, that means there are 36 - 22 = 14 sodas left. The answer is 14.