A) 25
B) 30
C) 20
D) 50
Correct Answer: A
Solution :
(a) Let the number be\[x\]. Then \[x-5=80%\] of \[x\Rightarrow x-5=x\times \frac{80}{100}\] \[\Rightarrow \]\[x-5=\frac{4}{5}x\Rightarrow x-\frac{4}{5}x=5\] \[\Rightarrow \]\[\frac{1}{5}x=5\Rightarrow x=25\]You need to login to perform this action.
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