Question

How do you find 25.8% of 4000?

Answer 1

`answer=1032`

Explanation:

consider we have to calculate `x%` of `y` so the sign of % after x shows that,
`x%=x/100`
& of represents the multiplication between those two terms, i.e.
x% of y=`x/100*y`
so, a/c to ques.
`25.8%of 4000`
=`25.8/100*4000=1032`

Answer 2

1032 is the answer

Explanation:

25.8%of 4000

`=25.8/100*4000`

`=1032`

Answer 3

Rather than just pumping out numbers I have demonstrated some tricks for doing some things in your head. Example: `xx4->` double and doubled again.

25.8% of 4000 =1032

Explanation:

`color(purple)("Initial bit of explaining percentage")`

Basically the symbol % means `xx1/100` including the multiply 'bit'

So `25.8% ->25.8xx1/100`

The mathematical equivalent of the word `color(red)("of")` in `25.8%color(red)(" of ")4000` is multiply. So we end up with:

`color(blue)(25.8color(white)("dd")color(green)(ubrace(%))color(white)("dd")color(red)(ubrace("of"))color(white)("ddd")4000)`

`color(blue)(25.8 color(white)("d")color(green)(xx1/100)color(white)("d.")color(red)(xx)color(white)("ddd")4000)`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
`color(purple)("Answering the question")`

`25.8xx1/100xx4000color(white)("dddd")->color(white)("dddd")25.8xxcancel(4000)^(40)/cancel(100)^1`

`color(white)("ddddddddddddddddddd")->color(white)("dddd")ubrace(25.8xx10)xx4`

`color(white)("ddddddddddddddddddd")->color(white)("dddddd")258color(white)("ddd")xx2xx2`

`color(white)(1)516`
`ul(color(white)(1)516larr" Add")`
`1032`