The number of boys is 12 more than two fifths of the class, and the number of girls is half of the number of boys. Q: how many students are there? The number of boys is 12 more than two fifths of the class, and the number of girls is half of the number of boys. How many are there in total?

The number of boys is 12 more than two fifths of the class, and the number of girls is half of the number of boys. Q: how many students are there? The number of boys is 12 more than two fifths of the class, and the number of girls is half of the number of boys. How many are there in total?

There are x boys and y girls
Then 1 / 2x = y; 2 / 5 (x + y) + 12 = X
X = 30; y = 15
There are 15 + 30 = 45 students in the class