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Let's see if you nuggets can still math.

When a number is decreased by 20% of itself, the result is 20. What is the number and what was the equation used?

>>

25-20%=20

>>

25

(4/5)x = 20

>>

>>606914773

25 * 0.8 = 20

>>

0.2 × X = 20

X = 20/0.2

X = 100

>>

>When a number is decreased by 20% of itself, the result is 20. What is the number

25

>and what was the equation used?

I dunno. mah brain told me so.

>>

>>606914982

Wrong, that equals 24.8

>>

>>606915085

such brilliance

>>

x-.2x=20

.8x=20

x=25

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>>606915193

>20% of 25 is 0.2

do you even math?

u retarded?

>>

potato guzinta potato = 20

>>

>>606914773

>X-(X/5)=20

>5X-X=100

>4X=100

>X=25

learntomath/faggot for making me reply

>>

>>606914773

25-5=20

or

25-(25(0.2))=20

>>

Anyone know how to solve this one ?

>>

>>606915387

I'm not him, but 20% is .2, so he's technically right. Obviously you didn't mean it like that, but 25 - 20% = 24.8 is what any calculator will give you. Think he's just pointing out your middle school formatting.

>>

25 right?

>>

>>606915758

draw the last line over onto the other side of the page and poke a hole

>>

>>606915758

it's mathematically impossible, unless you go through walls

>>

25

>>

>>606915896

20% is NOT 0.2. Percentages only make sense when you're talking about a percentage of another number. 20%=0.2 is retarded.

>>

>>

>>606914773

20% is a fifth of 100 20x5=100 so the outcome of your question is 100

>>

>>606916151

Mein toplogy nigger

>>

>>606914773

X - (X/5) = 20

4/5 X = 20

X = 20 : (4/5)

X = 20 x (5/4)

X = (20 x 5) / 4

X = 100 / 4

X = 25

>>

>>606916283

..just wow

>>

>>606914773

100*(20/80)

=10*(20/8)

=5*(20/4)

=25

>>

>>606915359

How did you find such a brilliant way to math?

>>

20/0,8= 25

>>

>>606914773

80% = 20

thus

80X% = 20X

80X = 100

X = 100/80 = 1,25

20 * 1,25 = 25

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>>606916216

You are an uneducated pleb. 1% means 1/100. It's a notation for a fraction i.e. a number. "Percentage of a number" is just the number you obtain by multiplying by the fraction.

For example "50% of X" is 50/100*X (notice the lack of brackets, plebs, it's not fucking ambiguous) which is ½*X. Have a nice day, peasant.

>>

>>606916789

Yeah, but not so easy to do in your head (not that that was the question...)

20/0.8

=20*(1/0.8)

=20*1.25

=20*(1+0.25)

=20+(20/4)

=25

>>

>>606916216

20% literally means 20/100 you retard.

In calculator it doesn't use it this way, but it is mathematecally correct.

>>

>>606917093

How does it do in a calculator then? In excel it stores it as 0.2 and simply changes the display format to 20%

>>

>>606916216

Conformed for non-STEM.

Enjoy burger production.

>>

>>606917093

It says a number decreased by 20% of ITSELF you stupid fuck.

>>

everyone so stupid here ... the result is obviously 20+20*20% = 24

>>

>>606917253

We have engineers making calculators that are idiot-friendly. They convert retarded input into meaningful input. We've come that far.

>>606917459

The guy he responded to wrote 25 - 20%, you stupid fuck.

>>

Hey how do you guys know this, it makesme sed ;(

>>

>>606917018

I'm aware that 20% literally means 20/100 ('per cent'), just the literal meaning isn't the meaning given to it my mathematicians. 20% is not a number..

>>

>>606917581

Oh look, it's op trying to shit his own thread up

>>

>>606917771

>20% is not a number..

That's right. It's a factor: 0.20

>>

>>606917459

lrn 2 read bro

>>

>>606917366

I'm writing my math PhD thesis.

Also, the number of people who think that doing a STEM degree makes them a genius is fucking stupid. Half the students I teach don't know shit.

Proof: you wrote "conformed", retard.

>>

>>606917771

>just the literal meaning isn't the meaning given to it my ENGINEERS

Fixed that for you. 20% IS a number. It's 0.2 i.e. 1/5. Go to the math department and ask anyone if you don't believe me.

>>

>>606918140

>I'm writing my math PhD thesis.

Field? Just curious.

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