Question

75% of the students in a class passed an exam. If 2 more students had passed the exam,
80% would have been successful. How many students are there in the class?
[Hint. Let the total number of students in the class be x, the
$75 \div 100 \times x + 2 = 80 \ \div 100 \times x$
PLEASE REPLY THIS​

Answer 1

Let the total number of students in the class be x

According to question

75%of x+2= 80% of x

75/100×x+2=80/100×x

3/4x+2=4/5x

2=4/5x-3/4x

2=(16x-15x)/20

2=x/20

x=2×20

x=40

Thus,there are 40 students in the class