Question

18 is what percent of 72?

Answer 1

`25%`

Explanation:

For calculating a number `x` as a percentage of another number `y`, one has to calculate `(x xx100)/y%`.

As such, `18` as a percentage of `72` will be `(18xx100)/72%=(1cancel(18)xx100)/(4cancel(72)`

= `100/4=(25cancel(100))/(1cancel(4))=25%`

Answer 2

For me, I usually change it to fraction in simplest form first.
`18-:72 = 0.25`

0.25 = 25%

Okay, I do admit it doesn't work most of the time.

Answer 3

A = `25%`

Explanation:

First, let's divide `72 / 18`

= `4`

Thus, we know that `18` goes into `72` `4` times, and that means that `18` is `1/4` of `72`. Now, we just have to convert `1/4` into a percent. The way we find the percentage is by converting this fraction into a decimal:

= `1/4`
= `0.25`

We can now find the percentage by simply looking at the decimal.
And thus, the answer is `25%`

All the best!