anonymous
  • anonymous
This a word problem about candy that I have gotten to two equations... 40x +100 y = 125 80x+84y=163 I dont know how to eliminate a variable or solve...thanks
Mathematics
jamiebookeater
  • jamiebookeater
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karatechopper
  • karatechopper
Can you tell me what the Word problem was?
anonymous
  • anonymous
ok
anonymous
  • anonymous
40 candy bars and 100 drinks cost $125 and 80 candy bars and 84 drinks cost $163..how much is each candy bar?

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anonymous
  • anonymous
Solve for x or y in one of the equations
anonymous
  • anonymous
x= 25 - 5/2 y ?
anonymous
  • anonymous
x= 5/8 y?
anonymous
  • anonymous
40x+100y=125 100y=-40x+125 y=-2/5x+5/4
anonymous
  • anonymous
ok
anonymous
  • anonymous
Now you know what y is so plug that into the other equation and solve for x 80x+84(-2/5x+5/4)=163
anonymous
  • anonymous
Thx.
anonymous
  • anonymous
right..Understand the theory-just seems overly complicated...usually the numbers are all nice and round and even... 84 times negative 2/5x + 5/4 makes my head spin..
anonymous
  • anonymous
Well fractions just multiply straight across top and bottom....think of 84 as 84/1
anonymous
  • anonymous
Thanks Caleb.
anonymous
  • anonymous
What do you get for your answer?
anonymous
  • anonymous
I dont...gonna let him finish the math and thanks for your help.
anonymous
  • anonymous
75 cents and 1.25!!

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