Question: The perimeter of a square-shaped piece of paper is 20 cm shorter than the height of a computer screen. How many cm is the height of the screen if the side of the square paper is 20 cm?
Answer: The perimeter of a square is found by 4 * side, which means the square paper has a perimeter of 4 * 20 = 80. Since the perimeter of the square is 20 cm shorter than the height of the computer screen, the height of the computer screen is 20 + 80 = 100cm. The answer is 100.
[Question]Jake is retrieving the notes on a communal board, putting all of the red notes in the complaints bin and all of the blue notes in the compliments bin. The red notes were in 5 rows with 6 notes in each row. There are 2 blue notes under each of the red notes, as well as another 10 blue notes scattered at the bottom of the board. How many notes in total are put into the complaints and compliments bins?
[Answer]There are a total of 5 rows of red notes * 6 notes per row = 30 red notes on the board. There are 2 blue notes per red notes * 30 red notes = 60 blue notes under the red notes. With the other blue notes at the bottom of the board, there are a total of 60 + 10 = 70 blue notes. So in total, there are 30 red notes + 70 blue notes = 100 notes in total. The answer is 100.
Q: My new house has 12 medium ceiling lights but I have seen small and large ceiling lights in other rooms. The small ones require 1 bulb, the medium ones require 2, and the large ones need 3 bulbs. How many bulbs should I buy if my wife says she saw twice as many large ceiling lights as medium ceiling lights and ten more small lights than medium ones?
A: If the house has twice the number of large ones as medium ones then the house has 2 * 12 = 24 large ceiling lights. Similarly, if it has 10 more small ones than the 12 medium ones then it has 10 + 12 = 22 small ceiling lights. If one small ceiling light requires 1 bulb then 22 small ones will require 1 * 22 = 22 bulbs. If one medium ceiling light requires 2 bulbs then 12 medium ones will require 2 * 12 = 24 bulbs. If one large ceiling light requires 3 bulbs then 24 medium ones will require 3 * 24 = 72 bulbs. Therefore the house will require 22 bulbs for the small ones + 24 bulbs for the medium ones + 72 bulbs for the large ones, for a total of 22 + 24 + 72 = 118. The answer is 118.
Question: Ben works 8-hour shifts in a furniture shop. It takes him 5 hours to build 1 rocking chair. How many chairs can he build in 10 days?
Answer: He works 8 hours a day for 10 days means he works 8 * 10 = 80 hours. It takes him 5 hours to build one rocking chair so over 80 hours he builds 80 / 5 = 16 rocking chairs. The answer is 16.
[Question]Tom decides to get a new floor for his room. It cost $50 to remove the floor. The new floor costs $1.25 per square foot and Tom's room is 8*7 feet. How much did it cost to replace the floor?
[Answer]The room is 8 * 7 = 56 square feet. So the new carpet cost 56 * 1.25 = $70. So the total cost was 50 + 70 = $120. The answer is 120.
[Question]James paves a new parking lot. It is 400 feet by 500 feet. Only 80% of that is useable for parking. It takes 10 square feet to park a car. How many cars can be parked?
[Answer]
The parking lot is 400 * 500 = 200,000. There are 200,000 * .8 = 160,000 square feet of parking space. That means he can park 16,0000 / 10 = 16000 cars. The answer is 16000.