anonymous
  • anonymous
Pola wants 3 oz of a 20% solution. she has only 5% and 30% available. how many oz of each should she mix to get what she wants?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
x+y =3 oz .05*x + .3*y = .2*3
anonymous
  • anonymous
could you please solve the equations..i dont know how to....
anonymous
  • anonymous
and why did u multiply .2 by 3

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anonymous
  • anonymous
what class are you taking?
cwrw238
  • cwrw238
Algebraic multiplied 0.2 by 3 because thats the amount of substance in 3 oz of solution (0.2 = 20%)
anonymous
  • anonymous
math 130- intermediate algebra
anonymous
  • anonymous
should be no problem for you to solve. very simple substitution.
anonymous
  • anonymous
ok. thnks
anonymous
  • anonymous
when pppl give yu best responses yur smart score goes up huh?
anonymous
  • anonymous
yes.
anonymous
  • anonymous
i multiplied the top equation by -.3 so that i could cancel out the y value and after i solved i got x= -.21
anonymous
  • anonymous
solve for either x or y, your choice: x+y =3 sub.s into: .05*x + .3*y = .2*3

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