How would you even start to solve this problem

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- Nov 20th 2012, 03:41 AMasilvester635Re: Solving systems of equation
How would you even start to solve this problem

- Nov 20th 2012, 03:48 AMasilvester635Re: Solving systems of equation
How would you even start to solve this problem

- Nov 20th 2012, 03:49 AMasilvester635Re: Solving systems of equation
How would you even start to solve this problem

- Nov 20th 2012, 03:52 AMgrillageRe: Solving systems of equation
Just the same way as before. Find t as before and then insert that into the first equation. Now it is quite easy.

- Nov 20th 2012, 06:53 AMskeeterRe: Solving systems of equation
- Nov 22nd 2012, 06:43 PMasilvester635Re: Solving systems of equation
How did you get 294, 164, 90, and 184?? I mean i get how the other guy got 201, 180 220, and 420.... ?????????

- Nov 22nd 2012, 07:25 PMMarkFLRe: Solving systems of equation
I collected like terms. If you are given x + y + 3 + 7 + 12 = 23, wouldn't you want to rewrite it as x + y = 1?

- Jan 9th 2013, 07:35 PMvioletvivianaRe: Solving systems of equation
x+10+y+36+t+z+80=420

-10 -36 -80

x+y+t+z=294 (we already know that y+z=90)

-y -z -90

x+t=204 (We already know that t=94)

-t -94

x=110

So now, since 210 people are enrolled in Computers, and we already know three out of the 4 computer slots in the venn diagram circle:

210-110-36-10=z

z=54 (that's your answer for how many students are taking all three courses)

Finally, you can do one of 5 things to figure y out:

1) solve for y in the equation with all of the variables equaling 420

x+10+y+36+z+80=420

x+y+t+z=294

y=294-110-94-54

2) Solve for y soley by using the rest of the fine arts numbers.

Total Fine Arts Students: 180

180-80-10-54=y

3) Do the same thing as above, but for Economics:

Total Eco Students: 220

220-94-54-36=y

4) Use the mini equation that we came up with z+y+t=184

z equals 54, & t=94 so

184-54-94=y

5) Use the OTHER mini equation z+y=90

z=54 so

90-54=y

So,

1. 94/500

2. 36/500

3. 54/500