A water tank decreases by 10 gallons every 3 hours every day. What is the total change in the amount of water in the tank after 6 days ?

Question

-80 gallons

-480 gallons

80 gallons

480 gallons

Answer 1

The water tank decreases by 10 gallons every 3 hours. In a day, there are 24 hours, so the tank decreases by 10/3 = 3.33 gallons every hour.
After 6 days, the water tank decreases by 3.33 * 24 * 6 = <<3.33*24*6=479.52>>479.52 gallons.
Rounding to the nearest whole number, the total change in the amount of water in the tank is 480 gallons. Answer: \boxed{480}.