Question

In a class 25% of the students are absent.if 45 students are present the what is the total strength of the school.

Answer 1

$75 \div 100 \times x = 45$
x is equal to 60
so the total strength of the class is 60

Answer 2

Answer:

present percentage=(100-16)percent

=84percent

let the total strength be x

then,

84percent of x=42

( 84/100 )x=42

x=42(100/84)

x=50

And:total strength=50students