Question: Jana is 5 inches taller than Kelly, and Kelly is 3 inches shorter than Jess. If Jess is 72 inches tall, how tall is Jana?
Answer: Step-by-step reasoning process: Kelly is 72 - 3 = 69 inches tall. Jana is 69 + 5 = 74 inches tall.
So the answer is 74.

Question: Sue works in a factory and every 30 minutes, a machine she oversees produces 30 cans of soda. How many cans of soda can one machine produce in 8 hours?
Answer: Step-by-step reasoning process: Since there are 2 sets of 30 minutes in an hour, then in 8 hours there are 8 x 2 = 16 sets of 30 minutes. Hence, a machine that Sue oversees can produce 30 cans x 16 = 480 cans of soda in 8 hours.
So the answer is 480.

Question: Tom decides to get a new floor for his room. It cost $50 to remove the floor. The new floor costs $1.25 per square foot and Tom's room is 8*7 feet. How much did it cost to replace the floor?
Answer: Step-by-step reasoning process: The room is 8 * 7 = 56 square feet. So the new carpet cost 56 * 1.25 = $70. So the total cost was 50 + 70 = $120.
So the answer is 120.

Question: At a certain bookstore, the best-selling book, "TOP," costs $8. The least-selling book, "ABC," costs $23. Thirteen "TOP" books and four "ABC" books were sold last week. What is the difference in the bookstore's earnings on these two books last week?
Answer:
Step-by-step reasoning process: On "TOP" books the bookstore made 13 * 8 = $104. The "ABC" books, on the other hand, were sold for a total of 4 * 23 = $92. The difference between earnings from these two books is 104 - 92 = $12.
So the answer is 12.