40. Jill has \( \$ 66 \) deducted from his paycheck each week for health insurance. This amounts to \( 15 \% \) of his gross income. What is her gross income?

To find Jill's gross income, we can set up the equation where \( 15\% \) of her gross income equals \( \$66 \). So, we can write: \[ 0.15 \times \text{Gross Income} = 66 \] To isolate the gross income, divide both sides by \( 0.15 \): \[ \text{Gross Income} = \frac{66}{0.15} = 440 \] Therefore, Jill's gross income is \( \$440 \) per week. When handling percentages, it's helpful to remember that they represent fractions of a whole. In Jill's case, since her health insurance deduction was \( 15\% \), it can also be interpreted as needing \( 15 \) parts out of every \( 100 \) for each paycheck. Make conversions easier by multiplying decimals for faster calculations!