SOLUTION: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)

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Question 9232: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)
Found 4 solutions by longjonsilver, rapaljer, JimMarshall, Alan3354:
Answer by longjonsilver(2297) About Me  (Show Source):
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double the 6 to give 12, then add on half of 6 (ie 3) to make 15

So, double the 8 to give 16 then add on half of 8 (ie 4) to make 20.

That is your answer

Jon.

Answer by rapaljer(4671) About Me  (Show Source):
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If a%2Fb=c%2Fd, then +a%2Ad+=+b%2Ac

In this way, if 6%2F8+=+15%2Fw then 6%2Aw+=+8%2A15
6w = 120, so divide both sides by 6, and w= 20

R^2 at SCC

Answer by JimMarshall(82) About Me  (Show Source):
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double the 6 to give 12, then add on half of 6 (ie 3) to make 15
So, double the 8 to give 16 then add on half of 8 (ie 4) to make 20. Ans

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
6/8=15/w
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Cross multiply
6w = 120
w = 20