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OpenStudy (anonymous):
If x, y, and k are positive numbers such that ((x)/(x+y))(10) + ((y)/(x+y))(20) = k and if x < y, which of the following could be the value of k?
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OpenStudy (anonymous):
A. 10 B. 12 C. 15 D. 18 E. 30
OpenStudy (anonymous):
@FriedRice idk
OpenStudy (anonymous):
|dw:1374246362975:dw|
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