Question

2% of which number is 0.005

Answer 1

We set up an equation: 0.005/ ?= 2/100

Cross multiply: 2*?= 0.005*100
⇒ ?= 0.005*100/2= 0.25

2% of 0.25 is 0.005.

Answer 2

Let's call the mystery number ' W ' (for "which number").

You said that 2% of W is 0.005

0.02 x W = 0.005

Divide each side by 0.02 : W = 0.005 / 0.02 = 0.25 .

2% of 0.25 is 0.005 .