4/7 of the students in a classroom are boys. If there are twelve girls in the class, how many total students are there?

28 students

Step-by-step explanation:

If 4/7 of the students are boys,

then 1 - 4/7 = girls

7/7 - 4/7 = 3/7

total students * 3/7 = girls

total students * 3/7 = 12

Multiply each side by 7/3

total students * 3/7 * 7/3 = 12*7/3

total students = 28

28 students total.

Step-by-step explanation:

Let's use a ratio:

boys : girls

4 : 3

16 : 12

To find the total, we need to add 16 and 12 which equals 28