A) 13
B) 7
C) 12
D) 6
Correct Answer: B
Solution :
\[\frac{3+x}{5+x}=\frac{5}{6}\] \[\Rightarrow \] \[6(3+x)=5(5+x)\] \[\Rightarrow \] \[18+6x=25+5x\] \[\therefore \] \[\,x=25-18=7\]You need to login to perform this action.
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