[Question]Emma traveled by car 280 miles in 2 hours 20 minutes. What was the average speed of the car in miles per hour?
[Answer]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.
Q: John raises butterflies. He has 4 jars of 10 caterpillars each. 40% of them fail to become butterflies, but the rest become caterpillars.  He sells the butterflies for $3 each. How much money does he make?
A: He has 4 * 10 = 40 caterpillars. 40 * .4 = 16 fail to form. That means he has 40 - 16 = 24 butterflies. So he makes 24 * 3 = $72. The answer is 72.
Question: A dietitian ate three-fourths of her lunch during her lunch break. If the total amount of food she had prepared for lunch had 40 calories, and the recommended calorie intake by the FDA is 25, how many more calories than the recommended amount did she eat?
Answer: A dietitian ate three - fourths of her lunch during her lunch break, containing 3 / 4 * 40 = 30 calories. If the recommended calorie intake by the FDA is 25, the dietitian ate 30 - 25 = 5 more calories than the recommended amount. The answer is 5.
[Question]Five times a week, Onur bikes 250 kilometers a day. His friend Hanil bikes 40 more kilometers of Onur biking distance in a day. What's the total distance the two friends bikes in a week?
[Answer]Since Onur bikes 250 kilometers in a day, he bikes 5 * 250 = 1250 kilometers for five days in a week. Onur's friend Hanil bikes 40 more kilometers in a day than Onur, meaning he bikes for 250 + 40 = 290 kilometers. In five days of the week, Hanil covers 290 * 5 = 1450 kilometers. In total, the two bikes for 1450 + 1250 = 2700 kilometers in 5 days of a week. The answer is 2700.
Q: Hadassah took six hours to paint 12 paintings. What would be the total time she's taken to finish all the paintings if she paints 20 more paintings?
A: If it took Hadassah six hours to paint 12 paintings, then she paints 12 / 6 = 2 paintings in an hour. If two paintings take an hour to complete, 20 paintings will take 20 / 2 = 10 hours. The total time she took to finish all the paintings is 10 + 6 = 16 hours. The answer is 16.
Question: The government donated tons of sand to four Cities. City A received 16 1/2 tons of sand, City B received 26 tons of sand, and City C received 24 1/2 tons of sand. The supplier lost the data for City D; however, they know the total for all four cities was 95 tons. How many tons of sand did City D receive?
Answer:
The total tons of sand donated to City A and City C is 16 1 / 2 + 24 1 / 2 = 41. The total tons of sand donated to City A, City B, and City C is 41 + 26 = 67. Therefore, City D received 95 - 67 = 28 tons of sand. The answer is 28.