 backpack sprayer can apply 15 ounces of liquid per minute. How many hours will it take to empty the
backpack’s 6.25 gallons of liquid?

To determine how many hours it will take to empty the backpack sprayer, we need to follow these steps:

1. **Convert gallons to ounces:**
   - 1 gallon = 128 ounces
   - Therefore, 6.25 gallons = \( 6.25 \times 128 = 800 \) ounces

2. **Calculate the total time in minutes:**
   - The sprayer applies 15 ounces per minute.
   - To find out how many minutes it will take to apply 800 ounces, divide the total ounces by the rate:
     \[
     \text{Minutes} = \frac{800 \text{ ounces}}{15 \text{ ounces per minute}} \approx 53.33 \text{ minutes}
     \]

3. **Convert minutes to hours:**
   - There are 60 minutes in an hour.
   - Convert 53.33 minutes to hours:
     \[
     \text{Hours} = \frac{53.33 \text{ minutes}}{60 \text{ minutes per hour}} \approx 0.89 \text{ hours}
     \]

So, it will take approximately **0.89 hours** to empty the backpack's 6.25 gallons of liquid.

Would you like more details or have any questions?

Here are five related questions to consider:
1. How many minutes will it take to empty 3 gallons of liquid?
2. If the sprayer’s flow rate is increased to 20 ounces per minute, how long will it take to empty the 6.25 gallons?
3. How many gallons can the sprayer empty in 30 minutes?
4. If you only have 2 hours available, how many gallons can be sprayed at the current rate?
5. What is the total number of minutes required to spray 10 gallons of liquid?

**Tip:** When working with liquid measurements, it's useful to remember common conversions, such as 1 gallon = 128 ounces.

Discover how long it takes to empty a 6.25 gallons backpack sprayer applying 15 ounces per minute. Follow step-by-step calculations involving unit conversion and rate problems. Suitable for Grades 6-8 students and anyone interested in practical math applications.

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