Solving Ratio Word Problem: ~36 Brand Y Refrigerators

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The appliance store has a ratio of 4 brand X refrigerators sold for every 11 brand Y refrigerators. To solve for the number of brand Y refrigerators sold out of the next 100, two equations are established: x + y = 100 and the ratio x/y = 4/11. This translates to 4y = 11x when cross-multiplying. By substituting and solving these equations, the approximate number of brand Y refrigerators sold can be determined. The discussion emphasizes the importance of translating the problem's data into mathematical equations for resolution.
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An appliance store sells only two brands of refigerator. The ratio of the number of brand X refigerators sold at this store to the number of Brand Y refigerators sold is about 4 to 11. Of the next 100 refigerators the store sells, approximately how many will be brand Y?

I don't know how to start this one.

I wrote 100 = 4x + 11y

However, I don't know how to solve a two variable equation.
 
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It is a perfectly sound 2 variable problem.U'll just to translate into equations whatever data the problem gives you.

So if "x" and "y" are the 2 variables which denote the # of refrigerators sold,what are the 2 relations between them that the problem gives...?

Daniel.
 
dextercioby said:
It is a perfectly sound 2 variable problem.U'll just to translate into equations whatever data the problem gives you.

So if "x" and "y" are the 2 variables which denote the # of refrigerators sold,what are the 2 relations between them that the problem gives...?

Daniel.

That for every 4 of the X Brand, there are 11 of the Y Brand sold?
 
That's one of them,of course.In elegant mathematical notation
\frac{x}{y}=\frac{4}{11}

What's the other (obvious one) ...?

Daniel.
 
dextercioby said:
That's one of them,of course.In elegant mathematical notation
\frac{x}{y}=\frac{4}{11}

What's the other (obvious one) ...?

Daniel.

That in 100 refigerators are sold between the two?

Or with the problem you gave me I cross multiplied which gave me 4y = 11x

I'm not so sure. :frown:
 
The problem says and i quote:"The ratio of the number of brand X refigerators sold at this store to the number of Brand Y refigerators sold is about 4 to 11".How would you transcribe that in math language...?

And yes,the sum is 100:
x+y=100

Daniel.
 
dextercioby said:
The problem says and i quote:"The ratio of the number of brand X refigerators sold at this store to the number of Brand Y refigerators sold is about 4 to 11".How would you transcribe that in math language...?

And yes,the sum is 100:
x+y=100

Daniel.

I would say that for every 4 brand X refigerators, there are 11 Brand Y refigerators sold.
 
Yes,which is described in the ratio that i wrote.

Daniel.
 
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