If 25 gallons of fuel are available and endurance required is 10 hours, what is the burn rate in gallons per hour?

• A. 2.0
• B. 2.5
• C. 3.0
• D. 2.8

Answer: (B)

Burn rate is the fuel consumed per hour. To find it, divide the available fuel by the endurance. With 25 gallons and 10 hours, 25 ÷ 10 = 2.5 gallons per hour. This rate uses exactly 25 gallons over 10 hours, so it fits perfectly. Rates like 2.0 gph would imply 20 gallons in 10 hours, 3.0 gph would require 30 gallons, and 2.8 gph would require 28 gallons, none matching the given amount.