The ratio of boys to girls in the school is 3 to 1. If there's a total of 400 students, How many are boys? Answer in a whole number.
The ratio of boys to girls in the school is 3 to 1, which means for every 3 boys, there is 1 girl.
Let's suppose the number of boys is 3x and the number of girls is x.
According to the given information, 3x + x = 400 (as there are a total of 400 students)
So, we can simplify and solve this equation: 4x = 400
Dividing both sides by 4, we get: x = 100
The number of boys is 3x = 3 * 100 = <<3*100=300>>300.
Therefore, there are 300 boys in the school.