I was wondering if any of you could solve the following equation,

Green paint and yellow paint can be mixed in the ratio 4:7 to make a certain lime colored shade. If a painter has 500 ml of green and 650 ml of yellow, what volume of lime colored paint can be made?

I have tried to solve this by using up all the green paint, and then using what is left of the yellow paint, however, I get confused when I do this. I also tried to add 500 and 650 to make it easier, but this does not work either.

Thank a lot!

  • $\begingroup$ For the purpose of making lime green paint, it is the yellow paint that is in short supply. Use it all. $\endgroup$ Dec 30, 2015 at 23:41
  • $\begingroup$ Hi, thanks for your reply, I have done that, but what would I do next? $\endgroup$ Dec 30, 2015 at 23:56
  • $\begingroup$ Either then calculate the amount of green paint used, and add, or more simply multiply $650$ by $\frac{11}{7}$. $\endgroup$ Dec 31, 2015 at 0:04
  • $\begingroup$ Where did you get the number 11/7 from? $\endgroup$ Dec 31, 2015 at 0:23
  • $\begingroup$ If there are $7$ yellow to every $4$ green, for every $7$ yellow we get $11$ of mixture. $\endgroup$ Dec 31, 2015 at 0:24


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