A) 30%
B) 25%
C) 20%
D) Data inadequate
Correct Answer: B
Solution :
Effective change in area \[=\left( x+y+\frac{xy}{100} \right)%\] \[\Rightarrow \]\[50=20+y+\frac{20\,\,\,\,y}{100}\] \[\Rightarrow \] \[50-20=y+\frac{y}{5}\] \[\Rightarrow \]\[30=\frac{6y}{5}\] \[\Rightarrow \]\[y=\frac{30\,\,\,\,5}{6}=25\]You need to login to perform this action.
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