Answer:
25 students
Step-by-step explanation:
Let x represent the amount of students in the astronomy club then:
80%x=20
Convert 80% to a fraction. Any percentage is that number over 100:
[tex]\frac{80}{100}x=20[/tex]
Simplify the fraction:
[tex]\frac{8}{10}x=20[/tex]
[tex]\frac{4}{5}x=20[/tex]
Multiply both sides by 5:
[tex]4x=100[/tex]
Divide both sides by 4:
[tex]x=25[/tex]
There are 25 students in the astronomy club.
