Question

What number is 25% of 64?

Answer 1

`16`

Explanation:

`64rarr100%`

`xrarr25%`

Find `x`,

`x=25*64/100=16`

`16` is `25%` of `64`.

Answer 2

`16`

Explanation:

To solve this problem, turn it into an equation. Here are some tips:

1. "Is" means "equals", so wherever you see "is", use a `=` sign.
2. "Of" means "multiplication", so use a `xx` sign when you see that word.
3. `25%` is the same as `25/100` as a fraction, or `0.25` as a decimal. I'm going to use the fraction form in the equation.
4. Use variables for the things you do not know. I will use the variable `x` for "what number".

`stackrel(x)overbrace"What number"stackrel(=)overbrace"is"stackrel(25/100)overbrace"25%"stackrel(xx)overbrace"of"stackrel(64)overbrace"64"`

`x = 25/100 xx 64`

`x = 25/100 xx 64/1`

`uarr` Anything divided by `1` is itself, so this does not change the value of the expression

`x = (25 xx 64)/(100 xx 1)`

`x = 1600/100`

`x = 16`

`16` is `25%` of `64`.