Step-by-step reasoning process: Since 80% of the people were adults, this means 100% - 80% = 20 % were children. 20% of the people vaccinated were children. The number of children is 20% of 650. 20% = 0.2, so 0.2 * 650 = 130 children were vaccinated.
The question and answer:
Question and answer: A clinic administered the covid vaccine to 650 people. 80% of the people were adults. How many of the vaccinated people were children?
The answer is 130

Step-by-step reasoning process: We calculate 50% of 16 GB:. 50 / 100 * 16 GB = 0.5 * 16 GB = 8 GB. That leaves 16 GB - 8 GB = 8 GB available on this key.
The question and answer:
Question and answer: On a 16 GB (gigabyte) capacity USB drive, 50% is already busy. Calculate the number of gigabytes still available.
The answer is 8

Step-by-step reasoning process: If a paint mixer takes three days to make 18 drums of paint in a day, he makes 18 / 3 = 6 drums of paint. The number of days it will take for him to make 360 drums of paint, making 6 drums a day, is 360 / 6 = 60 days.
The question and answer:
Question and answer:
Making an equal number of drums of paint each day, a paint mixer takes three days to make 18 drums of paint. How many days will it take for him to make 360 drums of paint?
The answer is 60