A finish wall area is 1,520 sq ft and paint covers 380 sq ft per gallon. How many gallons are needed for one coat before waste?
Correct Answer
B) 4 gallons
Gallons are 1,520 / 380 = 4 gallons.
Why This Is the Correct Answer
Gallons are 1,520 / 380 = 4 gallons.
Why the Other Options Are Wrong
Option A: 3 gallons
paint coverage gallons, choice a: 3 gallons covers 1,140 sq ft at 380 sq ft/gal, not the stated 1,520 sq ft. Coverage check: Gallons are 1,520 / 380 = 4 gallons.
Option C: 5 gallons
paint coverage gallons, choice b: 5 gallons is wrong because 5 gallons covers 1,900 sq ft at 380 sq ft/gal, not the stated 1,520 sq ft. Coverage check: Gallons are 1,520 / 380 = 4 gallons.
Option D: 6 gallons
paint coverage gallons, choice c: 6 gallons covers 2,280 sq ft at 380 sq ft/gal, not the stated 1,520 sq ft. Coverage check: Gallons are 1,520 / 380 = 4 gallons.
Memory Technique
Keep a inspection mark beside paint coverage gallons: if one number is skipped, the option drifts away from 4 gallons.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use by topic index - acoustical ceilings / paint / tile / resilient base to confirm that Gallons are 1,520 / 380 = 4 gallons.
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