[Question]David is taking a data analytics course that lasts for 24 weeks. The course consists of 2 three-hour classes and 1 four-hour class each week. In addition, David must spend 4 hours each week working on small group homework assignments. How many hours will he spend on this course?
[Answer]Each week, David will spend 3 hours + 3 hours + 4 hours = 10 hours in class. Add to that his 4 hours of small group work, 4 + 10 = 14 hours a week. He will spend 14 hours x 24 weeks = 336 hours on the course. The answer is 336.

[Question]A 4th grade class with 20 students and 3 teachers is going to a science museum. The entrance ticket costs $5 each. How much will they pay for the entrance tickets?
[Answer]20 + 3 = 23 people from the 4th grade class are going to the science museum. Therefore, they will pay a total of 23 x $5 = $115. The answer is 115.

[Question]Marcy can make 3 spears out of a sapling and 9 spears out of a log. How many spears can she make out of 6 saplings and a log?
[Answer]First find the total number of spears she makes from saplings: 3 spears / sapling * 6 saplings = 18 spears. Then add the number she makes from the log: 18 spears + 9 spears = 27 spears. The answer is 27.

[Question]Jenny had $24 left after spending 3/7 of her money. How much is half of her original amount of money?
[Answer]
Jenny spent 1 - 3 / 7 = 4 / 7 of her money. Since 4 / 7 is equal to $24, then 1 / 7 is equal to $24 / 4 = $6. So, Jenny originally had $6 x 7 = $42. Therefore, half of her original amount of money is $42 / 2 = $21. The answer is 21.