Q. If there’s 1500 gallons and you use 10 gallons a week how long would 1500 gallons last
Calculate weeks needed: Calculate the number of weeks 1500 gallons will last at a rate of 10 gallons per week.1500 gallons ÷10 gallons/week = 150 weeks.
Check calculation: Check the calculation for any errors.1500÷10=150. No errors found.
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