Question

After a 5% pay raise , Hermione is earning $21,000 per year. What was she earning before the pay raise?

Answer 1

Answer:

$\ 20,000$

Step-by-step explanation:

Let

x -----> Hermione was earning before the pay raise

we know that

$100\%+5\%=105\%=105/100=1.05$

so

The linear equation that represent this problem is

$1.05x=21,000$

Solve for x

Divide by 1.05 both sides

$x=21,000/1.05$

$x=\ 20,000$