Question

If 60% of a given number is 18.0, what is 25% of
the given number?

Answer 1

Explanation:

Let the number be x

From the question 60% of the number is 18

The equation is

`(60)/(100) x = 18`

Multiply through by 100

That's

`100 * (60)/(100) x = 18 * 100 \\ 60x = 1800 \\ (60x)/(60) = (1800)/(60)`

We have the final answer as

x = 30

The number is 30

25% of the number is

`(25)/(100) * 30 \\ \rarr \: (1)/(4) * 30 \\ \rarr \: (30)/(4) \: \: \: \: \: \: \: \\ \rarr \: \: \: \: (15)/(2)`

We have the final answer as

7.5

Hope this helps you