Q: In a stationery store, there are three kinds of pencils. A pencil with an eraser, which costs $0.8 each, a regular pencil for $0.5 each, and a short pencil for $0.4 each. This store was able to sell 200 pencils with an eraser, 40 regular pencils, and 35 short pencils. How much money did the store make from these sales?
A: For pencils with erasers, the store received a total of 200 * 0.8 = $160. For regular pencils, the store received 40 * 0.5 = $20. And for short pencils only 35 * 0.4 = $14. In total, the store made 160 + 20 + 14 = $194 from selling these pencils. The answer is 194.
Question: Lawrence worked 8 hours each day on Monday, Tuesday and Friday. He worked 5.5 hours on both Wednesday and Thursday. How many hours would Lawrence work each day if he worked the same number of hours each day?
Answer: 8 hours * 3 = 24 hours. 5.5 * 2 = 11 hours. 24 + 11 = 35 hours. 35 / 7 = 5 hours. Lawrence would work 5 hours each of the 7 days in a week. The answer is 5.
[Question]Carter has a jar with 20 green M&Ms and 20 red M&Ms. He eats 12 of the green M&Ms, then his sister comes and eats half the red M&Ms and adds 14 yellow M&Ms. If Carter picks an M&M at random now, what is the percentage chance he'll get a green M&M?
[Answer]First find the final number of green M&Ms by subtracting 12 from the starting number: 20 M&Ms - 12 M&Ms = 8 green M&Ms. Then find the final number of red M&Ms by dividing the starting number by half: 20 M&Ms / 2 = 10 red M&Ms. Then find the total number of M&Ms at the end by adding the number of red, green and yellow M&Ms: 8 M&Ms + 10 M&Ms + 14 M&Ms = 32 M&Ms. Then divide the number of green M&Ms by the total number of M&Ms and multiply by 100 to find the percentage chance Carter gets a green M&M: 8 M&Ms / 32 M&Ms * 100 = 25%. The answer is 25.
Q: It takes 1 person working 10 hours to figure out the solution to a math problem. If you add a second person who's equally good at math, how long will the two of them have to work to solve the same problem?
A: Since you're doubling the number of people working on the task, that means you will be able to reduce the amount of time worked in half if they're of equal skill. Therefore, you take the original time of 10 hours and perform 10 / 2 = 5 hours spent working on the problem. The answer is 5.
Question: The area of a forest is three times the area of the square-shaped street. If the street has a length of 100 meters on one side and the number of trees per square meter in the forest is 4, calculate the total number of trees in the forest.
Answer: Since the area of a square is sides squared, the area of the square - shaped street is 100 * 100 = 10000 square meters. The area of the forest is three times the area of the square - shaped street, a total of 3 * 10000 = 30000 square meters. If the number of trees per square meter in the forest is 4, there are 4 * 30000 = 120000 trees in the forest. The answer is 120000.
Q: Hayden has a tank with a small hole in the bottom. The tank starts with 40 gallons of water. It loses 2 gallons of water per hour. Hayden does not add any water for the first two hours. He adds 1 gallon of water to the tank in hour three. He adds three gallons of water to the tank in the fourth hour. How much water is left in the tank at the end of the fourth hour?
A:
Over the four hours, the tank loses 2 * 4 = 8 gallons of water. Hayden adds a total of 1 + 3 = 4 gallons of water. At the end of the four hours, there is 40 - 8 + 4 = 36 gallons of water left in the tank. The answer is 36.