Answer: The percentage of the tub that is filled after 8 minutes is is the 40%
Explanation:
the 100% of the bathtub is 80 gallons of water.
the rate per minute is 4 gallons, so in 8 minutes, the amount of water in the bathtub will be:
4*8 gallons = 32 gallons
the percentage that will be filled of the bathtu is:
(32 gallons/80 gallons)*100% = 0.4*100% = 40%
The percentage of the tub that is filled after 8 minutes is is the 40%