[Question]Sally bought 3 photograph frames, each costing her $3. She paid with a $20 bill. How much change did she get?
[Answer]She bought the frames for 3 × $3 = $9. Sally got $20 - $9 = $11 in change. The answer is 11.
Q: Tom was putting hardwood flooring into his living room that measured 16' long and 20' wide. The flooring comes 10 sq ft per box and he has already put down 250 sq ft of flooring. How many more boxes does Tom need to complete the job?
A: The entire sq ft of the living room is LxW so the room is 16x20 = 320 sq ft. Tom has already put down 250 sq ft so he needs to put down 320 - 250 = 70 sq ft of flooring. The boxes contain 10 sq ft of flooring per box and he needs 70 more sq ft of flooring so he needs 70 / 10 = 7 more boxes. The answer is 7.
Question: Luke started working on a 1000-piece jigsaw puzzle. The first day he worked on it, he put together 10% of the pieces. On the second day, he put together another 20% of the remaining pieces from the first day. On the third day, he put together 30% of the remaining pieces from the previous day. How many pieces does he have left to complete after the third day?
Answer: Luke started putting together, 1000 x 0.1 = 100 pieces. The next day, there were 1000 - 100 = 900 pieces left. Then he put together 900 * 0.2 = 180 pieces on the second day. So there were 900 - 180 = 720 pieces left. On the third day, he put together 720 * 0.3 = 216 pieces. Therefore, Luke still has 720 - 216 = 504 pieces left to complete the puzzle. The answer is 504.
[Question]Milly is making croissants. She needs to fold the dough 4 times, which takes 5 minutes each time, then let it rest for 75 minutes each time. If mixing the ingredients takes 10 minutes and baking the croissants takes 30 minutes, how many hours does the whole process take?
[Answer]First finding the time to fold the dough and let it rest one time: 5 minutes + 75 minutes = 80 minutes. Then find the total time spent folding and resting the dough: 80 minutes / time * 4 times = 320 minutes. Then add the mixing and baking time: 320 minutes + 30 minutes + 10 minutes = 360 minutes. Then divide that number by the number of minutes per hour to find the total time in hours: 360 minutes / 60 minutes / hour = 6 hours. The answer is 6.
Q: Cindy and Olaf made 15 candied apples which they will be selling for $2 each, and 12 candied grapes which they will be selling for $1.5. How much will they earn if they sell everything?
A: They will earn 15 x $2 = $30 for the candied apples. They will earn 12 x $1.5 = $18 for the candied grapes. Therefore, Cindy and Olaf will earn $30 + $18 = $48 if they sell everything. The answer is 48.
Question: Amanda and her family are going to re-paint all the walls inside their house. Before they get started they want to divide up the work. Since all the rooms in the house have different numbers and sizes of walls in them, they figure the fairest way to divide up the work is to count all the walls in the house and assign an equal number to each person. There are 5 people in Amanda's family, including herself. There are 9 rooms in the house. 5 of the rooms have 4 walls each. The other 4 rooms each have 5 walls each. To be fair, how many walls should each person in Amanda's family paint?
Answer:
First, Amanda needs to figure out how many walls there are in the house, 5 rooms x 4 walls each = 20 walls. The other 4 rooms have x 5 walls each = 20 walls. The house has 20 walls + 20 walls = 40 walls total. To divide the work equally between the 5 people, 40 walls / 5 people = 8 walls for each person. The answer is 8.