A hot tub is 75 percent full with 600 gallons

of water. How many gallons of water are in

the hot tub when it's half full?

When the hot tub is half full, there are 400 gallons of water in it.

Step-by-step explanation:

If 75% or 3/4 of the hot tub is 600 gallons and you need to find 50% or 1/2. Divide 600 by 3 to get 200 then simply multiply by 2 to get 400.