[Question]: Lucas' father offers to pay him $2 for each window in the house that he cleans. Each floor of Lucas' house has 3 windows; Lucas lives in a 3-story house. To get Lucas to finish the job faster, his father tells him that he will subtract $1 for every 3 days that pass without Lucas finishing the job. In 6 days, Lucas finishes cleaning all the windows in the house. How much will his father pay him, in dollars?
[Answer]: Lucas cleans a total of 3 floors * 3 windows / floor = 9 windows. The windows cleaned earn Lucas 2 dollars each, so Lucas earns 9 windows * $2 / window = $18. For taking 6 days to clean, Lucas' father subtracts 6 days / $3 / day = $2. In total, Lucas' father will pay him $18 - $2 = $16.
So the answer is 16.

[Question]: Meryll wants to write 35 multiple-choice questions and 15 problem-solving questions for her Chemistry class. She already has written 2/5 of the multiple-choice and 1/3 of the problem-solving questions. How many more questions does she need to write for both multiple-choice and problem-solving?
[Answer]: Meryll has written 35 questions x 2 / 5 = 14 multiple - choice questions. While she has written 15 questions x 1 / 3 = 5 problem - solving questions. The total number of questions that Meryll has to write is 35 questions + 15 questions = 50 questions. Meryll has written a total of 14 questions + 5 questions = 19 questions. Hence, she needs to write 50 questions - 19 questions = 31 questions more.
So the answer is 31.

[Question]: Isabel loves to run in the forest and she does it within a circuit that is 365 meters long. She runs the circuit 7 times in the morning and runs it 3 times in the afternoon. How many meters does Isabel run during a week?
[Answer]:
In the morning she runs 7 * 365 = 2555 metres. In the afternoon she runs 3 * 365 = 1095 meters. In one day, afternoon and morning, she runs 2555 + 1095 = 3650 meters. In a week, she runs 7 * 3650 = 25550 meters.
So the answer is 25550.