The fall semester lasts 15 weeks. During the weekdays, Paris studies 3 hours a day for her classes. On the weekends, she spends 4 hours studying on Saturday and 5 hours studying on Sunday. How much time does Paris study during the semester?
Let's think: During the weekdays, Paris studies 3 hours a day for 5 * 3 = 15 hours. She studies 4 hours on Saturday and 5 hours on Sunday for a total of 4 + 5 = 9 hours on the weekends. If she studies 15 hours during the weekdays and 9 hours on the weekends then she studies 15 + 9 = 24 hours per week. There are 15 weeks in the fall semester and she studies 24 hours a week so she will spend 15 * 24 = 360 hours studying.. The answer is: 360.

Dallas and Austin went to the pick-your-own orchard. Dallas picked 14 bags of apples and 9 bags of pears. Austin picked 6 bags of apples more than Dallas, and 5 fewer bags of pears than Dallas. How many bags of fruit did Austin pick, in total?
Let's think: He picked 14 + 6 = 20 bags of apples. He picked 9 - 5 = 4 bags of pears. He picked 20 + 4 = 24 bags of fruit in total.. The answer is: 24.

There was only enough room for 21 people on a raft if no one wore life jackets. There were 7 fewer people who could fit on the raft if everyone wore life jackets. If 8 people on the raft needed life jackets, how many people could fit on the raft?
Let's think: If everyone wore life jackets, only 21 - 7 = 14 people could fit on the raft. For every person less on the raft, 14 / 7 = 2 life jackets could fit. For 8 life jackets, 8 / 2 = 4 less people could fit. 21 - 4 = 17 people could fit on the raft.. The answer is: 17.

Zach was a waiter in a fancy restaurant. His last table for the night was a party for 4 people. The mom ordered lobster for $25.50, the dad ordered steak for $35.00 their twin boys both ordered a cheeseburger and fries for $13.50 each. They started their meal with an appetizer that cost 8.50. Everyone also ordered a dessert that cost $6.00 each. They wanted to give a 20% tip for Zach on the bill. What did the final bill total come to?
Let's think:
The twins ordered a cheeseburger each so 2 * 13.50 = $27.00 for both cheeseburgers. Everyone ordered a dessert so 4 * 6 = $24.00 for dessert. When you add all the meals together they spent 25.50 + 35.00 + 27.00 + 8.50 + 24.00 = $120.00. Zach's tip was 20% so .20 * 120.00 = $24.00. When you add up the meals $120.00 and Zach's tip of $24.00 then the total cost is 120.00 + 24.00 = $144.00.. The answer is: 144.