Question

An insurance company has 75 employees if 60 have phones what portions does not have phones

Answer 1

The company has 75-60=15 employees who do not have phones, that makes 15/75=0.2=20% who don't have a phone.

Answer 2

a=the ones who have phones
b=the employees who don't
a+b=75
60+b=75
b=75-60
b=15
15·100/75=
0,2·100=20

Answer:20%