MHB Part 2 | Draw a venn diagram and include the given information

[mathlearn]

Part 1 : http://mathhelpboards.com/pre-algebra-algebra-2/draw-venn-diagram-include-given-information-19723.html#post90092

Among the 40 persons who visited the clinic , there were persons who were on medication and those who were not on medication as well. An incomplete Venn diagram drawn using this information is shown below

https://www.physicsforums.com/attachments/6060._xfImport

iii . Copy the Venn diagram given above and write down the values relevant to the two empty regions in it.

iv. How many persons had diabetes but were not on medication.

 

[MarkFL]

In part I of the problem we are told 25 people have diabetes, so what would you put into the area representing those with diabetes but not on medication?

 

[mathlearn]

In part I of the problem we are told 25 people have diabetes, so what would you put into the area representing those with diabetes but not on medication?

Thank you very much MarkFL (Smile) (Party)

Those with diabetes but not on medication would be = 25-20 = 5

So the updated Venn,

View attachment 6061

Completing the Venn,

The total who were on medication 40-12=38

View attachment 6062

Answer here would be,

iv. How many persons had diabetes but were not on medication.

5

Correct? (Smile)

Many Thanks (Clapping)

 

[MarkFL]

Yes, the answer to part iv is 5, however, I am curious how you got 18 for those on medication but not suffering from diabetes? 40 people visited the clinic, yet your sum of all areas is 55...(Thinking)

 

[mathlearn]

Yes, the answer to part iv is 5, however, I am curious how you got 18 for those on medication but not suffering from diabetes? 40 people visited the clinic, yet your sum of all areas is 55...(Thinking)

Well , It is given that 12 patients were not medication, So what I did was subtracted the total which is 40 from 12 to get the number of patients who were on medication which is 38

The total who were on medication 40-12=38

(Smile) (Clapping) I tried to complete that set which represents the people on medication which add up to 38 which already has 20 thereby I added 18 to sum it to 38. Which resulted me in

View attachment 6063

 

[mathlearn]

Which of the following is correct? (Clapping)

View attachment 6064

orView attachment 6065

Many Thanks (Smile) (Happy) (Party)

 

[MarkFL]

I like the first one, because it all adds up to 40 as it should. ;)