How many of the 28 students in Andy's class are boys, if 4/7 are girls?

(4/7) * (28/1) = 112/7 = 16

28 - 16 = ?

12

To find the number of boys in Andy's class, we need to find the fraction of boys in the class.

Given that 4/7 of the students are girls, we can subtract this fraction from 1 to get the fraction of boys.

1 - 4/7 = 3/7

So, 3/7 of the students in Andy's class are boys.

To find the number of boys, we multiply the fraction of boys (3/7) by the total number of students (28).

3/7 * 28 = 12

Therefore, there are 12 boys in Andy's class.

To find out how many of the 28 students in Andy's class are boys, we need to determine the number of students who are girls first.

Given that 4/7 of the students are girls, we can calculate the number of girls in the class by multiplying the total number of students (28) by the fraction representing the proportion of girls (4/7):

Number of girls = (4/7) * 28

To simplify this calculation, we can rewrite the fraction 4/7 as a decimal:

Number of girls = (4/7) * 28 = 0.5714 * 28

Multiplying the decimal by 28, we get:

Number of girls = 0.5714 * 28 ≈ 16

Since there are 28 students in total and 16 of them are girls, we can find the number of boys by subtracting the number of girls from the total number of students:

Number of boys = Total number of students - Number of girls
Number of boys = 28 - 16 = 12

Therefore, there are 12 boys in Andy's class.