• # question_answer 6) When a number is reduced by 5, it becomes 80% of itself. Find the number. A)  25  B)  30C)  20                               D)  50

(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$