Question

75%of student 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

Answer 1

let total students be x
75%of x +2 = 80% of x
75x/100 +2 = 80x/100
2 = 80x/100-75x/100
2=5x/100
200= 5x
x= 200/5 => 40 students
hope this helps