Let, the number of student = x
Fraction of boys = 1 - 2/5 = 3/5
So, it would be: x * 3/5 = 1482
x = 1482*5 / 3
x = 7410/3
x = 2470
Thus, There are total 2470 students
Hope this helps!
You simple write out the the equation in words
for example
-12+2
negative twelve plus two
The triangle is a scalene and achte triangle simce the sides are not the same length and the angles are less than ninety degree.