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The problem asks how many gallons of paint Becky should buy to paint the walls of her bedroom.

We are given:
- 1 gallon of paint covers **300 ft²**.
- The surface area Becky wants to paint is **70,560 in²**.

First, let's convert the surface area from square inches (in²) to square feet (ft²):
- There are \( 12 \times 12 = 144 \) square inches in a square foot. So, to convert square inches to square feet:
\[
\text{Area in ft²} = \frac{70,560 \, \text{in²}}{144} = 490 \, \text{ft²}
\]

Next, we calculate how many gallons of paint are needed. Since each gallon covers 300 ft², we divide the total area by the coverage of one gallon:
\[
\text{Gallons of paint} = \frac{490 \, \text{ft²}}{300 \, \text{ft²/gallon}} \approx 1.63 \, \text{gallons}
\]

Since Becky can't buy a fraction of a gallon, she will need to round up and buy **2 gallons** of paint.

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Would you like more details or have any questions about this solution?

Here are 5 related questions to explore further:
1. What if Becky needed two coats of paint? How many gallons would she need then?
2. How much area will remain unpainted if Becky only buys 1 gallon?
3. If the paint store sells half-gallons, how many half-gallons should she buy instead?
4. How does the coverage change if the gallon of paint only covers 250 ft² instead of 300 ft²?
5. What if Becky wanted to paint the ceiling in addition to the walls?

**Tip:** When calculating with different units, always ensure they are properly converted before solving the problem.

Becky wants to paint the walls in her bedroom. A gallon of paint will cover 300 ft². She measures the surface to be painted; it's 70,560 in². How many gallons of paint should she buy?

Learn how to calculate the number of gallons of paint needed for painting a room's walls, based on a given surface area of 70,560 in² and paint coverage of 300 ft² per gallon. This problem covers unit conversion from square inches to square feet and practical division calculations. Suitable for middle school students.

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