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]Ben's potato gun can launch a potato 6 football fields. If a football field is 200 yards long and Ben's dog can run 400 feet/minute, how many minutes will it take his dog to fetch a potato he launches?
[Answer]First find the total distance the potato flies in yards: 200 yards / field * 6 fields = 1200 yards. Then multiply that number by the number of feet per yard to convert it to feet: 1200 yards * 3 feet / yard = 3600 feet. Then divide that number by the dog's speed to find the number of minutes it has to run to fetch the potato: 3600 feet / 400 feet / minute = 9 minutes. The answer is 9.
Q: Emma traveled by car 280 miles in 2 hours 20 minutes. What was the average speed of the car in miles per hour?
A: We first convert the time of 4 hours 20 minutes in minutes 2 hours 20 minutes = 2 × 60 + 20 = 140 minutes. Average speed S is given by distance / time. Hence S = 280 miles / 140 minutes = 2 mile / minute. There are 60 minutes in an hour so the speed is 2 * 60 = 120 miles / hour. The answer is 120.
Question: Melody has three dogs. Each dog eats 1/2 of a pound of dog food twice a day. If Melody bought 30 pounds of dog food, how many pounds of dog food are left after a week?
Answer: Each dog eats 1 / 2 x 2 = 1 pound of dog food each day. So the three dogs eat a total of 1 x 3 = 3 pounds each day. That is 3 x 7 = 21 pounds in a week. Therefore, 30 - 21 = 9 pounds of food are left after a week. The answer is 9.
[Question]A private company raised $2500 to be used for charity. They donated 80% to a public foundation with 8 organizations. How much money will each organization receive?
[Answer]The public foundation will have $2500 x 80 / 100 = $2000. So, each of the organizations will receive $2000 / 8 = $250. The answer is 250.
[Question]James buys 3 CDs. Two of them are 1.5 hours each. The last one is twice that long. What is the combined length of the CDs?
[Answer]
The long CD is 1.5 * 2 = 3 hours. The two shorter CDs have a combined length of 1.5 * 2 = 3 hours. So in total the CDs had a length of 3 + 3 = 6 hours. The answer is 6.