equation help please

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Balzamon Sweden. Apr 18 2011 20:04. Posts 2868

(solved, thx LP!)

I feel ashamed having to post this here not knowing how to solve this myself(pokerplayers are suposed to not be retarded when it comes to math right) , but it was 6 years ago that i touched math so pretty much forgot it all

Is this eqution solvable with the numbers i have (if it is how?)

i know this:
a) x-662,8 = y

b) y/x = 30%

recently started studdying economics, i would appreciate any help

0 votes

Last edit: 18/04/2011 21:21

palak United States. Apr 18 2011 20:10. Posts 4601

multiply equation b by x so you get y=.3*x

substitute into equation a for x-662.8=.3*x

solve for x gives u x=662.8/.7 x=946.9

y=.3*x =.3*946.9=284.1

y=284.1 x=946.9

dont tap the glass...im about ready to take a fucking hammer to the aquarium

SpasticInk Sweden. Apr 18 2011 20:10. Posts 6298

30 % is 0.3

y = 0.3X

then x-662.8= 0.3x

x = 0,3x +662.8

0.7x = 662.8

x = 662.8/0.7

Balzamon Sweden. Apr 18 2011 20:15. Posts 2868

thx LP <3

Funktion Australia. Apr 18 2011 20:43. Posts 1638

If you want to brush up on maths you might like to try the Khan Academy http://www.khanacademy.org/

And for economics specifically:

Micro - http://highered.mcgraw-hill.com/sites/0074717111/student_view0/powerpoint_slides.html

Macro - http://highered.mcgraw-hill.com/sites/0074716980/student_view0/powerpoint_slides.html

Balzamon Sweden. Apr 18 2011 21:06. Posts 2868

okay thanks, will check it out

Funktion Australia. Apr 18 2011 21:30. Posts 1638

You are welcome sir.