Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day. about how many days altogether will it take him to drink 20 gallons?

To answer this first lets see how many gallons of water he drinks per week.

15.75 ÷ 4 = 3.9375

Now lets divide to see how much he drinks each day.

3.9375 ÷ 7 = 0.5625

20 ÷ 0.5625 = 35.5555...

So, it will take Carter about 35 and a half days to finish 20 gallons.

Hope I helped ya!!