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m, r, x and y are positive

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m, r, x and y are positive

by sanju09 » Thu Apr 09, 2009 1:59 am
If m, r, x and y are positive, is the ratio of m to r equal to the ratio of x to y?

(1) The ratio of m to y is equal to the ratio of x to r.

(2) The ratio of m + x to r + y is equal to the ratio of x to y.



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by sacx » Thu Apr 09, 2009 2:26 am
is m:r = x:y or is m*y = x*r

Stmt I

m:y = x:r
or m*r = x*y

Insuff

stmt II

(m+x): (r+y) = x:y

(m+x)*y = (r+y)*x

m*y = x*r

[spoiler]Suff

B[/spoiler]
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