Question

75% 0f the students in a class passed the exam. if 2 more students had passed the exam,80 % would have been succesful.

Answer 1

Answer:

$\frac{x}{y} \times 100 = 75$

And

$\frac{x + 2}{y} \times 100 = 80$

Subtract the equation

$\frac{2}{y} \times 100 = 5 \\ y = \frac{200}{5} = 40$

Total number of students = 40