Question

one fifth of a number is 20 solve it by trail and error method

Answer 1

I think the answer is 100

Answer 2

Hi Mate!!!

Let the number be x.

$\frac{1}{5} \times x = 20$

x = 20 × 5 = 100

x = 100

So, the number is $<b>100.$

$\huge{Thanks.}$