Q: A guy goes to the tool shop and buys 5 sets of drill bits. Each set cost 6 dollars. He then pays 10% tax on the order. What was the total amount he paid?
A: 33
Step-by-step reasoning process: The drill bits cost 5 * 6 = $30. The tax came out to 30 * .1 = $3. So the total cost was 30 + 3 = $33.


Q: A fifth-grade class went on a field trip to the zoo, and their class of 10 students merged with another class with the same amount of students. 5 parents offered to be a chaperone, and 2 of the teachers from both classes will be there too. When the school day was over, the students could choose to go home and 10 of them left. Two of the chaperones were parents in that group, so they left as well. How many individuals were left at the zoo?
A: 15
Step-by-step reasoning process: A total of 10 * 2 = 20 students went on the field trip. Some chaperones showed up, letting the group grow to 20 + 5 = 25 individuals. The teachers had to come as well, making the group as big as 25 + 2 = 27 individuals. When the school day ended, 27 - 10 = 17 individuals were left. A couple of chaperones followed suit, leaving 17 - 2 = 15 people at the zoo.


Q: Julia bought 3 packs of red balls, 10 packs of yellow balls, and 8 packs of green balls. There were 19 balls in each package. How many balls did Julie buy in all?
A: 399
Step-by-step reasoning process: The total number of packages is 3 + 10 + 8 = 21. Julia bought 21 × 19 = 399 balls.


Q: Nick has 35 quarters. 2/5 of the quarters are state quarters, and 50 percent of the state quarters are Pennsylvania. How many Pennsylvania state quarters does Nick have?
A: 7
Step-by-step reasoning process: State quarters:35(2 / 5) = 14 quarters. Pennsylvania:14(.50) = 7 quarters.