Reasoning & answer: CoT: For every addition of 100 people added the speed is halved so for the first 100 people added its speed is 1 / 2 * 500 km / hr = 250 km / hr. For another addition of 100 people its speed is also halved, 1 / 2 * 250 km / hr = 125 km / hr. So for the total of 200 additional people, its speed is 125 km / hr.
The answer: 125
Question: For every 100 additional people that board a spaceship, its speed is halved. If the speed of the spaceship with 200 people on board is 500km per hour, what is its speed in km/hr when there are 400 people on board?

Reasoning & answer: CoT: Mary has collected 5 * $600 = $3000. Scott therefore has $3000 / 3 = $1000. All together, they have raised $3000 + $1000 + $600 = $4600. They have therefore exceeded their goal by $4600 - $4000 = $600.
The answer: 600
Question: Scott, Mary, and Ken committed to raising $4,000 for their local children's cancer hospital. Right now, Mary's collection is five times what Ken has, but three times Scott's funds. If Ken has $600, by how much have the three exceeded their goal?

Reasoning & answer: CoT: He read 600 / 40 = 15 hours per week. So now he reads 15 - 4 = 11 hours per week. She now reads 40 * 1.5 = 60 pages per hour. So she reads 11 * 60 = 660 pages per week.
The answer: 660
Question: Jim reads at a rate of 40 pages an hour. He reads a total of 600 pages per week. He increases his reading speed to 150% of its former speed but reads 4 hours less per week. How many pages does he read a week now?

Reasoning & answer: CoT: The number of customers who were served coffee in the restaurant is 3 / 5 * 25 = 15. If the total number of customers who came to the restaurant was 25, then 25 - 15 = 10 customers did not buy coffee.
The answer: 10
Question:
On a particular week, Fatima's restaurant served 25 people food and drinks, and 3/5 of that number came to buy coffee. How many people did not buy coffee in the restaurant?