Question: Leila and her friends want to rent a car for their one-day trip that is 150 kilometers long each way. The first option for a car rental costs $50 a day, excluding gasoline. The second option costs $90 a day including gasoline. A liter of gasoline can cover 15 kilometers and costs $0.90 per liter. Their car rental will need to carry them to and from their destination. How much will they save if they will choose the first option rather than the second one?
Answer: Leila and her friends will travel a total distance of 150 x 2 = 300 kilometers back - and - forth. They will need 300 / 15 = 20 liters of gasoline for this trip. So, they will pay $0.90 x 20 = $18 for the gasoline. Thus, the first option will costs them $50 + $18 = $68. Therefore, they can save $90 - $68 = $22 if they choose the first option. The answer is 22.

Question: Over several years, Daniel has adopted any stray animals he sees on the side of the road. He now has 2 horses, 5 dogs, 7 cats, 3 turtles, and 1 goat. All of the animals are perfectly healthy. In total, how many legs do his animals have?
Answer: He has 2 horses, 5 dogs, 7 cats, 3 turtles and 1 goat so in total he has 2 + 5 + 7 + 3 + 1 = 18 animal. Each animal has 4 legs so 18 * 4 = 72 legs total. The answer is 72.

Question: The first store charges $3 for 6 apples while the second store charges $4 for 10 apples. How many cents can you save on each apple from buying $4 for 10 apples than from $3 for 6 apples?
Answer: In the first store, each apple costs $3 / 6 = $0.5. In the second store, each apple costs $4 / 10 = $0.4. So, you can save $0.5 - $0.4 = $0.1 on each apple from buying $4 for 10 apples than from $3 for 6 apples. In cents, this is equal to $0.1 x 100 = 10. The answer is 10.

Question: Kat decides she wants to start a boxing career. She gets a gym membership and spends 1 hour in the gym 3 times a week doing strength training. She also trained at the boxing gym 4 times a week for 1.5 hours. How many hours a week does she train?
Answer:
She strength trains 3 * 1 = 3 hours a week. She does boxing training 4 * 1.5 = 6 hours a week. So she trains a total of 3 + 6 = 9 hours a week. The answer is 9.