A) \[11\frac{1}{9}%\]
B) \[1\frac{11}{9}%\]
C) \[11\frac{9}{11}%\]
D) \[9\frac{1}{11}%\]
Correct Answer: D
Solution :
(d): Similar to Q5 10% increase \[\Rightarrow 1.1x\] Let decrease be p% \[\Rightarrow 1.1x\text{ }becomes\,1.1x\frac{\left( 100-p \right)}{100}=x.\] \[\Rightarrow 1.1\left( 100-p \right)=100\] \[\Rightarrow 110-1.1p=100\] \[\Rightarrow 1.1p=10\] \[\Rightarrow p=\frac{10}{1.1}=\frac{100}{11}=9\frac{1}{11}%\]You need to login to perform this action.
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