Discussion Forum



1)

The difference between a number and its three-fifth is 50. What is the number ?


A) 75

B) 100

C) 125

D) 150

E) 175

Answer:

Option C

Explanation:

Let the number be $x$.
Then, $x-\frac{3}{5}x=50$
$\Leftrightarrow \frac{2}{5}x=50$
$\Leftrightarrow x =\left(\frac{50 \times 5}{2}\right)=125$.