Question: Casey is trying to decide which employee she wants to hire. One employee works for $20 an hour. The other employee works for $22 an hour, but Casey would also get a $6/hour subsidy from the government for hiring a disabled worker. How much money per week would Casey save by hiring the cheaper employee, if they both work 40 hours per week?
Answer with step-by-step thinking: First find the weekly cost of the first employee: $20 / hour * 40 hours / week = $800 / week. Then find the hourly cost of the second employee after the government subsidy: $22 / hour - $6 / hour = $16 / hour. Then find the weekly cost of the second employee: $16 / hour * 40 hours / week = $640 / week. Then subtract the smaller weekly cost from the bigger weekly cost to find the difference: $800 / week - $640 / week = $160 / week.
So the answer is 160.

Question: An apartment complex has 4 identical buildings. Each building has 10 studio apartments, 20 2 person apartments, and 5 4 person apartments. How many people live in the apartment complex if it has 75% of its maximum occupancy?
Answer with step-by-step thinking: First, we find out how many people live in each building. In addition to 10 1 person apartments, as a studio apartment is for a single person, there are 20 2 person apartments meaning there are 20 * 2 = 40 people capable of living there. We then find out how many people can live in the 4 person apartments by multiplying the number of available 4 person apartments by 4, performing 5 * 4 = 20 people capable of living there. So, in 1 building there is room for 10 + 40 + 20 = 70 people. We multiply this by the 4 buildings in total, finding a maximum occupancy of 4 * 70 = 280 people. We then multiply this by .75 to find out how many people would live there at 75% of maximum occupancy, performing 280 * .75 = 210 people.
So the answer is 210.

Question: There are 30 students in Ms. Leech's class. Twice as many girls as boys are in the class. There are 10 boys in the class and each boy today brought 5 cups for science activity class as Ms. Leech had instructed. If the total number of cups brought by the students in the class is 90, how many cups did each girl bring?
Answer with step-by-step thinking:
If there are 30 students in Ms. Leech's class, and the number of boys is 10, the number of girls in Ms. Leech class is 30 - 10 = 20. If each boy brought 5 cups for the science activity, the total number of cups brought by the boys is 5 * 10 = 50 cups. The number of cups that the girls brought is 90 - 50 = 40 of the total number. Since the number of girls in the class is 20, each girl brought 40 / 20 = 2 cups each.
So the answer is 2.