Question

http://prntscr.com/9fsabn

Answer 1

@OpenStudier

Answer 2

i think its #2

Answer 3

Please show your actual work. "I think it's 2" doesn't teach either you or me anything.

Answer 4

Exactly what @mathmale said. I need to understand how you are approaching this problem.

Answer 5

2 gallons of yellow and 3 gallons of blue would make 5 gallons of green
but we need 10 gallons of green?
Double that
eh 10