Question

at 6:00 A.M., there were 800,000 gallons of water remaining in a reservoir.After 8 hours of irrigation, there were 100,000 gallons of water remaining.Find the rate of change in the number of gallons of water for the time the field was being irrigated.

Answer 1

Water used = time * rate of water used

rate of water used = (800,000 - 100,000)/8

water remaining = water started with - water used