[Question]: Mitch has saved $20000 to finance his boating hobby. A new boat costs $1500 per foot in length. If Mitch needs to keep $500 for a license and registration, and three times that amount for docking fees, how many feet is the longest boat he can buy?
[Answer]: Mitch needs to keep 500 * 3 = 1500 for docking fees. Thus, he needs to keep 500 + 3 * 500 = $2000 for license, registration, and docking fees. He has 20000 - 2000 = $18000 left to spend on a boat. Therefore, the longest boat he can buy is 18000 / 1500 = 12 feet long.
So the answer is 12.

[Question]: Roger uses his lunch break to walk the stairs in his office building. He can walk 2,000 steps in 30 minutes. If his daily goal is 10,000 steps, how many minutes will it take him to reach his goal?
[Answer]: Each step Roger walks for 30 / 2000 = 0.015 minutes. To walk 10000 steps he'll take 0.015 * 10000 = 150.
So the answer is 150.

[Question]: A school principal is booking hotel rooms for a class of 30 students to stay at during an overnight field trip. Each of the hotel's rooms has two queen size beds, which can fit two students each, and a pull-out couch, which can fit one student. How many rooms does the principal need to book to fit all of the students in the class?
[Answer]:
Each room can fit 2 * 2 + 1 = 5 students. Thus, the principal needs to book 30 / 5 = 6 rooms to fit everyone.
So the answer is 6.