Question: Olivia's insurance premium starts out at $50/month. It goes up 10% for every accident and $5/month for every ticket. If she gets in one accident and gets 3 tickets, what's her new insurance premium?
Answer with step-by-step thinking: First find the increase due to the accident: $50 * 10% = $5. Then find the total increase due to the tickets: $5 / ticket * 3 tickets = $15. Then add both increases to the base price to find the new price: $50 + $5 + $15 = $70.
So the answer is 70.


Question: Alice and Bob decided to bake cookies for their first date. Alice baked 74 chocolate chip cookies and Bob baked 7 peanut butter cookies. After accidentally throwing some on the floor, Alice baked 5 more cookies and Bob baked 36 more. If they had 93 edible cookies at the end, how many were accidentally thrown on the floor?
Answer with step-by-step thinking: Before throwing the cookies, Alice and Bob baked 74 + 7 = 81 cookies. After throwing the cookies, they baked 5 + 36 = 41 cookies. In total, they baked 81 + 41 = 122 cookies. They threw 122 - 93 = 29 cookies on the floor.
So the answer is 29.


Question: It’s exam season and Tristan has several exams to prepare for. On Monday, he studies for 4 hours then studies for twice this long on Tuesday. On Wednesday, Thursday, and Friday he studies for 3 hours each day. He wants to study for a total of 25 hours over the week and divides the remaining amount of study time evenly between Saturday and Sunday. How many hours does Tristan spend studying on Saturday?
Answer with step-by-step thinking:
On Tuesday, Tristan studies twice as long as he did on Monday and this amounts to 4 hours * 2 = 8 hours. So in the first 5 days of the week, he studies for a total of 4 hours Monday + 8 hours Tuesday + 3 hours Wednesday + 3 hours Thursday + 3 hours Friday = 21 hours. He therefore has 25 planned hours – 21 used hours = 4 hours left to study. As he splits his time evenly over 2 days, he spends 4 hours / 2 = 2 hours studying on Saturday.
So the answer is 2.