Answer: 10 is your answer bud ❤
Use proportions.
214/236=x/100(100 because it's a percentage.
cross multiply:
23600=214x
solve for x:
x= 11.3(rounded)
11.3% increase
If he splits it into 4 bottles you have to convert 4/5 into a decimal and you would get .8 then
.8 divided by 4 would be .2 two tenths so there would be. two tenths of a gallon in each bottle
.2