Reasoning and answer: Boys make up 100% - 60% = 40% of the total number of students. The total number of students at the school is 300 / (40 / 100) = 750 students. Since 60% of the students are female, there are (60 / 100) * 750 = 450 female students.
The answer: 450
What was the question?
Question: If 60% of the students at school are girls and the number of boys is 300, how many girls are at the school?

Reasoning and answer: The second bus is carrying 12 * 2 = 24 people. The third bus has 24 6 = 18 people. The fourth bus has 12 + 9 = 21 people on it. In total, there are 12 + 24 + 18 + 21 = 75 people on the buses.
The answer: 75
What was the question?
Question: The school is organizing a trip to the museum. 4 buses were hired to take the children and teachers to their destination. The second bus has twice the number of people on it as the first bus. The third bus has 6 fewer people than the second bus. The fourth bus has 9 more people than the first bus. If the first bus has 12 people, how many people are going to the museum in total?

Reasoning and answer: There are four sides to a rectangle, the width is W and so the length is 2W, and we can put that in this equation: W + W + 2W + 2W = 30 feet. If we add the sides together, we get 6W = 30 feet. To find W, we divide both sides by 6, like this: 6W / 6 = 30 feet / 6, so W = 5 feet.
The answer: 5
What was the question?
Question:
Josh built his little brother a rectangular sandbox. The perimeter of the sandbox is 30 feet and the length is twice the width. What is the width of the sandbox?