Question: Cappuccinos cost $2, iced teas cost $3, cafe lattes cost $1.5 and espressos cost $1 each. Sandy orders some drinks for herself and some friends. She orders three cappuccinos, two iced teas, two cafe lattes, and two espressos. How much change does she receive back for a twenty-dollar bill?
Answer with step-by-step thinking: Find the total cost of the cappuccinos by multiplying the price by the quantity: 3 cappuccinos x $2 / cappuccino = $6. Then do the same for the iced teas: 2 iced teas x $3 / tea = $6. Then do the same for the cafe lattes: 2 lattes x $1.5 / latte = $3. Then do the same for the espressos: 2 espressos x $1 = $2. In total Sandy pays $6 + $6 + $3 + $2 = $17. Sandy will receive $20 - $17 = $3 in change.
So the answer is 3.


Question: A cleaning company produces two sanitizer sprays. One spray kills 50% of germs, and another spray kills 25% of germs. However, 5% of the germs they kill are the same ones. What percentage of germs would be left after using both sanitizer sprays together?
Answer with step-by-step thinking: After the first spray kills 50% of germs, there will be 100 - 50 = 50% left. The second spray kills 25%, but 5% have already been killed by the 50% spray, so it kills 25 - 5 = 20%. After the second spray kills 20% of the remaining germs, there will be 50 - 20 = 30% left.
So the answer is 30.


Question: Two birds making a nest each made 10 round trips collecting building materials. If the building materials were located 200 miles from where they were building the nest, what is the total distance the birds covered in the trips?
Answer with step-by-step thinking:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
In one round trip, traveling to and from the building materials location, one bird covers 2 * 200 = 400 miles. If in one round trip one bird covers 400 miles, in 10 round trips, it covers 400 * 10 = 4000 miles. Since there were two birds collecting the materials, they covered a combined 4000 + 4000 = 8000 miles collecting the building materials in 10 round trips.
So the answer is 8000.