SOLUTION: I need helping solve this mixture problem. Its about a sports drink. here are the two equations: x + y = 9 .25x + .75y = .54(9) and everytime I try this equation I

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Question 1071532: I need helping solve this mixture problem. Its about a sports drink. here are the two equations:
x + y = 9
.25x + .75y = .54(9)
and everytime I try this equation I get it wrong. I've tried it about 6 times already.
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
(1) x + y = 9
(2) 0.25x + 0.75y = 4.86 (0.54(9) = 4.86)
(1)—> x=9-y
Substitute "9-y" for "x" in (2):
(0.25)(9-y) + 0.75y = 4.86
2.25 - 0.25y + 0.75y = 4.86
0.5y = 4.86-2.25
0.5y = 2.61
y = 2.61/0.5 = 5.22
y=5.22 —> x=9-5.22 = 3.78,
so x=3.78 and y=5.22
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Ans: +highlight%28x=3.78%29 and +highlight%28y=5.22%29
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Check: x+y = 3.78 + 5.22 = 9 (ok)
0.25x+0.75y = 0.25(3.78) + 0.75(5.22) = 0.945 + 3.915 = 4.86 (ok)
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