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

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
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Xo Exia oX
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If the ratio of yellow jelly beans to red jelly beans is 4:3

Postby Xo Exia oX » Mon Jul 13, 2009 12:30 am

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?

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stapel_eliz
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Postby stapel_eliz » Mon Jul 13, 2009 1:49 am

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? :wink:

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Xo Exia oX
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Re: Ratio problem

Postby Xo Exia oX » Mon Jul 13, 2009 5:41 pm

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.


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