A pump moves 18 gallons per minute. How many gallons does it move in 45 minutes?
Correct Answer
A) 810 gallons.
Eighteen gallons per minute for 45 minutes equals 810 gallons.
Why This Is the Correct Answer
Eighteen gallons per minute for 45 minutes equals 810 gallons.
Why the Other Options Are Wrong
Option B: 720 gallons.
720 gallons. is below the supported result for plumbing flow calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 900 gallons.
900 gallons. is above the supported result for plumbing flow calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 1,080 gallons.
1,080 gallons. is above the supported result for plumbing flow calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to controlling, adjust for minute, then let Estimating Temporary set the finish line.
Reference Hint
Study anchor (closed-book): memorize Plumbing flow calculation from California Plumbing Code, California Code of Regulations Title 24. / Title 24 California Plumbing Code flow and capacity concepts; know the rule or calculation trigger without relying on exam-room lookup.
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