Hannah is trying to figure out how much she'll get paid this week. She makes $30/hour and works 18 hours per week. Her pay is docked $5 each time she's late. If she was late 3 times this week, how much does she get paid? Give the rationale and then the answer.
Let's think step by step. Hannah's total earnings are 18 hours * $30 / hour = $540 a week. Her pay was docked because she was late 3 times, so 3 times * $5 per time = $15 were docked. She gets paid $540 - $15 = $525 at the end of the week.. The answer is: 525.

Nancy replaced all of the old vinyl tiles in her bathroom with new hardwood flooring. She replaced flooring in two areas of the bathroom: a 10 foot by 10 foot central area, and a 6 foot by 4 foot hallway. How many square feet of hardwood flooring did Nancy install in her bathroom? Give the rationale and then the answer.
Let's think step by step. 10 feet by 10 feet central area is 10 * 10 = 100 square feet of space. 6 feet by 4 feet hallway is 4 * 6 - 24 square feet of space. Combined, the two areas where she replaced flooring contain 100 + 24 = 124 square feet of space.. The answer is: 124.

A survey conducted by the school showed that only 20% of the 800 parents agree to a tuition fee increase. How many parents disagree with the tuition fee increase? Give the rationale and then the answer.
Let's think step by step. There were 800 x 20 / 100 = 160 parents who agreed to the tuition fee increase. So, there were 800 - 160 = 640 parents who disagreed.. The answer is: 640.