Mathematics
Class 8
2044
Knowledge
Let the total number of students in the school be x, then 60% of x = 690.
Now we solve the expression and get the value of x i.e.
60/100 × x = 690
x = 690 × 100 / 60 = 150
Therefore, the total number of students in the school = 1150.
Hence the number of boys in a class = 1150 – 690 = 460.