I got 3 guestions and u dont have to really show the work till the 3rd?

The answer to the third is fill up the 6 gallon and pour it into the 10. Fill the 6 again and fill the 10 up with it. The 10 had 4 gals left in it, so the 6 will have 2 when you get the 10 full. Pour out the 10 and pour the remaining 2 into it. Then fill the 6 again and pour into the 10 with the previous 2 in it, making a total of 8!!