From the question, we know that Genevieve saves 15 cents for each dollar earned. Thus:
Savings = 15 cents
Earnings = 1 dollar = 100 cents
⇒ Savings (%) =
= 15%
So, equation that can help determine Genevieve's savings based on her earnings is:
Genevieve's Savings = 15% × Genevieve's Earnings