There are equal number of boys and girls in a class. If 12 girls entered out, twice the boys as girls remain. What was the total number of students in a class?

There are equal number of boys and girls in a class. If 12 girls entered out, twice the boys as girls remain. What was the total number of students in a class?

Answer: 48








Explanation:
Let the boys = b and girls = g
Given bg−12=21${\displaystyle \frac{b}{g-12}}={\displaystyle \frac{2}{1}}$
Substitute b = g in the above equation. g = 24. So total students = 24 + 24 = 48