Question

2.5% of a number is 100. What is a number?

Answer 1

It is 4000

Explanation:

100 : 2.5% = 4000

Answer 2

The number is 4000

Explanation:

2.5% of a number. This means:

`0.025*x`

We know that this expression must be equal to 100 then:

`0.025x=100`

Now we solve the equation for the variable x

`0.025x=100`

Divide both sides of the equation by 0.025

`(0.025)/(0.025)x=(100)/(0.025)`

`x=(100)/(0.025)`

`x=4000`