1. **State the problem:** Half of Robert's wire equals two-thirds of Maria's wire, and together their wires total 10 feet. We need to find how much longer Robert's wire is than Maria's.
2. **Define variables:** Let $R$ be the length of Robert's wire and $M$ be the length of Maria's wire.
3. **Write the equation from the problem:** Half of Robert's wire equals two-thirds of Maria's wire:
$$\frac{1}{2}R = \frac{2}{3}M$$
4. **Express $R$ in terms of $M$:** Multiply both sides by 2 to isolate $R$:
$$R = 2 \times \frac{2}{3}M = \frac{4}{3}M$$
5. **Use the total length equation:** The total length is 10 feet:
$$R + M = 10$$
Substitute $R$:
$$\frac{4}{3}M + M = 10$$
6. **Combine like terms:**
$$\frac{4}{3}M + \frac{3}{3}M = 10$$
$$\frac{7}{3}M = 10$$
7. **Solve for $M$:** Multiply both sides by $\cancel{\frac{3}{7}}$:
$$M = 10 \times \frac{3}{7} = \frac{30}{7} \approx 4.29$$
8. **Find $R$:**
$$R = \frac{4}{3} \times \frac{30}{7} = \frac{120}{21} = \frac{40}{7} \approx 5.71$$
9. **Find how much longer Robert's wire is than Maria's:**
$$R - M = \frac{40}{7} - \frac{30}{7} = \frac{10}{7} \approx 1.43$$
**Answer:** Robert's wire is $\frac{10}{7}$ feet (approximately 1.43 feet) longer than Maria's wire.
Robert Maria Wire 3C5255
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.