With a sprayer having a 4-gallon tank and 20 gpa calibration, how many acres can you spray per full tank?

With a sprayer having a 4-gallon tank and 20 gpa calibration, how many acres can you spray per full tank?

• A. 0.1 acre
• B. 0.2 acre
• C. 0.5 acre
• D. 1.0 acre

Answer: (B)

The key idea is how many acres you can treat given a specific gallons-per-acre rate. At 20 gallons per acre, covering one acre requires 20 gallons of spray. A 4-gallon tank can supply 4 gallons, so the area you can treat is 4 ÷ 20 = 0.2 acres. So, per full tank, you can spray about 0.2 acres (roughly one-fifth of an acre). If you needed to cover a full acre, you’d need five full tanks at this rate, or you’d need to adjust the tank size or the application rate.

The key idea is how many acres you can treat given a specific gallons-per-acre rate. At 20 gallons per acre, covering one acre requires 20 gallons of spray. A 4-gallon tank can supply 4 gallons, so the area you can treat is 4 ÷ 20 = 0.2 acres. So, per full tank, you can spray about 0.2 acres (roughly one-fifth of an acre). If you needed to cover a full acre, you’d need five full tanks at this rate, or you’d need to adjust the tank size or the application rate.