If the ratio of yellow jelly beans to red jelly beans is 4:3

[Xo Exia oX]

If the ratio of yellow jelly beans to red jelly beans is 4:3 and there are 21 beans in the jar, how many are yellow?

[stapel_eliz]

If the ratio is four to three, then there are sets of seven. How many sets of seven can you get from twenty-one?

Then how many sets of four yellows are there? And how many sets of three reds are there? So how many are there of each sort?

[Xo Exia oX]

I guess solving with cross multiply wasn't working out for me.

So 3 sets of 4's and 3's, which means 12 yellow and 9 red.