Question

36 is 0.9% of what number w?

Answer 1

36 x 0.9 = answer
you can use a calculator

Answer 2

We set up an equation: 36/?= 0.9/100

Cross multiply: 0.9*?= 36*100
⇒ ?= 36*100/0.9= 4000

36 is 0.9% of 4000.