A) 2: 3
B) 3: 2
C) 3: 1
D) 1: 3
Correct Answer: C
Solution :
\[\frac{3x-y}{x+5y}=\frac{5}{7}\] \[\Rightarrow \]\[21\,x-7y=5x+25y\] \[\Rightarrow \]\[21\,x-5x=25y+7y\] \[\Rightarrow \]\[16x=32y\] \[\Rightarrow \]\[\frac{x}{y}=\frac{32}{16}=\frac{2}{1}\] \[\Rightarrow \] \[\frac{x+y}{x-y}=\frac{2+1}{2-1}=3:1\]You need to login to perform this action.
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