If a pump moves 435,000 gal in 48 hours, how many gallons will it move in 7 hours under the same conditions?

• A. 63,400 gal pumped
• B. 9,000 gal pumped
• C. 435,000 gal pumped
• D. 77,000 gal pumped

Answer: (A)

With a constant pump rate, the amount pumped is directly proportional to time. Multiply the total pumped by the fraction of time used: 7/48.

435,000 × (7/48) = 435,000 × 0.14583 ≈ 63,437.5 gallons. So about 63,437.5 gallons; the closest option is 63,400 gallons.

Why the others don’t fit: 9,000 gallons would imply a much shorter time than 7 hours at this rate, or an error in scaling. 435,000 gallons is the amount for 48 hours, not 7. 77,000 gallons corresponds to a longer time than 7 hours.