1. **State the problem:** Make $w$ the subject of the equation $$2h = \frac{1}{5}fw$$. 2. **Understand the formula:** The equation relates $h$, $f$, and $w$. We want to isolate $w$ on one side. 3. **Rewrite the equation:** Multiply both sides by 5 to eliminate the fraction: $$5 \times 2h = 5 \times \frac{1}{5}fw \implies 10h = fw$$ 4. **Isolate $w$:** Divide both sides by $f$ (assuming $f \neq 0$): $$w = \frac{10h}{f}$$ 5. **Final answer:** The subject $w$ is $$w = \frac{10h}{f}$$. This means $w$ equals ten times $h$ divided by $f$.