Jane is painting her room violet. The 15 gallon bucket of purple paint that she currently
has is 30% red paint and 70% blue paint. This shade of violet is more red, and so Molly will need
paint that is 40% red paint, and thus 60% blue paint. How many gallons of red paint should she
add to her current bucket in order to be able to paint her room violet?

Question

Jane is painting her room violet. The 15 gallon bucket of purple paint that she currently
has is 30% red paint and 70% blue paint. This shade of violet is more red, and so Molly will need
paint that is 40% red paint, and thus 60% blue paint. How many gallons of red paint should she
add to her current bucket in order to be able to paint her room violet?

anonymous · Answer

@DangerousJesse Are you still there? lol jw :)

dangerousjesse · Answer

$\frac{3}{7}=\frac{9}{21}$
$\frac{4}{6}=\frac{6}{9}$ 
So that's 20% more red paint needed $15\times 1.2= 3$
3 gallons

dangerousjesse · Answer

Sorry, mathjax froze :P

anonymous · Answer

Thank you! :)

anonymous · Answer

I actually understand it now and will redo the problem on my own but this helped me a lot! @DangerousJesse