Question

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?

Answer 1

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

Answer 2

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

Answer 3

and why did u multiply .2 by 3

Answer 4

what class are you taking?

Answer 5

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

Answer 6

math 130- intermediate algebra

Answer 7

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

Answer 8

ok. thnks

Answer 9

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

Answer 10

yes.

Answer 11

i multiplied the top equation by -.3 so that i could cancel out the y value and after i solved i got x= -.21

Answer 12

solve for either x or y, your choice:
x+y =3

sub.s into:
.05*x + .3*y = .2*3