Answer:
[tex]\$20,000[/tex]
Step-by-step explanation:
Let
x -----> Hermione was earning before the pay raise
we know that
[tex]100\%+5\%=105\%=105/100=1.05[/tex]
so
The linear equation that represent this problem is
[tex]1.05x=21,000[/tex]
Solve for x
Divide by 1.05 both sides
[tex]x=21,000/1.05[/tex]
[tex]x=\$20,000[/tex]
