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x+y =3 oz
.05*x + .3*y = .2*3

could you please solve the equations..i dont know how to....

and why did u multiply .2 by 3

what class are you taking?

Algebraic multiplied 0.2 by 3 because thats the amount of substance in 3 oz of solution
(0.2 = 20%)

math 130- intermediate algebra

should be no problem for you to solve. very simple substitution.

ok. thnks

when pppl give yu best responses yur smart score goes up huh?

yes.

solve for either x or y, your choice:
x+y =3
sub.s into:
.05*x + .3*y = .2*3