calcuting what an extra 30% is???

[balky12]

Yea I would just do

X * 1.3

However other forms include

(X/100)*130

 

[robfosters]

I’m absolutely rubbish at maths so I have to use a dunces method of just taking 10% of the figure (which is the simplest percentage of all) and just multiplying it by the percentage I’m after, so basically with £50, I would just multiply 5X3 to get 15.add it on and done.

 

[antijoke]

I'd take 10% of the number so in your example 5 then times it by three and add it, so 65.

 

[robfosters]

I'd take 10% of the number so in your example 5 then times it by three and add it, so 65.

That’s what I meant yeah, it’s the simplest method or I’d just go here https://percentagecalculator.net/

 

[antijoke]

That’s what I meant yeah, it’s the simplest method or I’d just go here https://percentagecalculator.net/

 

[XeNoN89]

I'd take 10% of the number so in your example 5 then times it by three and add it, so 65.

This is what i do

 

[Randomface74]

wolfram alpha quick maffs

 

[dl8860]

Margin and markup are different, important to remember.

If something costs you £100 and you sell it for £130, the markup is 30% (30/100) but the margin is ~23% (30/130).

 

[Malevolence]

For straight forward simple **** like the one in the OP I'd do it in my head, 10% is £5 multiply it by 3 and add it on. For anything complex I'd probably whip out my phone and use Calculator N+

 

[Flubble]

£50 + 30% = http://lmgtfy.com/?q=50+30%

 

[Ayahuasca]

Yeah for percentages in tens I do it as 10% then multiply to get the number. Even if it’s not in tens it’s easy to break it up into tens then single digits and add.

I’ve seen some horrific ways of doing percentages over the years, even from people who you wouldn’t suspect.

 

[marco.da.man]

simple on calculater say you have 188 x 0.3=56.7 then subtract that from 188 = new total

 

[5punk3monk3y]

Margin and markup are different, important to remember.

If something costs you £100 and you sell it for £130, the markup is 30% (30/100) but the margin is ~23% (30/130).

This, it's hugely important in business to know the difference between these and also not to look like an idiot during a sales meeting.

 

[Broken Hope]

Just do 50+30 and press the % key on the calculator and then press equals?

 

[Lakeland]

10% method is the easiest if it’s mental maths.

 

[jpod]

Goddamit I missed a maths post that I knew the answer to - dohh! What's the chances of that happening?

 

[eddiemcgarrigle]

For me, I always work out what 10% is and then multiple. So 10% of £50 is £5 and multiple by 3 = £15, added to your original £50 makes £65.

 

[DereksDontRun]

For example if I take £50 and I want to add 30% would you use the calculation £50 * 1.3 = £65
Or would you use £50 / 0.70 = £71.42?

the 1st option is 30% added to £50 the 2nd option is £50 = 70% of £71.42 - quite different results.

 

[BigT]

I hope the person you’re discussing this with doesn’t work in any capacity that requires them to do pricing if they don’t know their basic markup and margin formulas!

 

[Inferno99]

To increase a set value of by 30% just multiply by 1.3.
However, cost/margin is the method i'd use for marking up goods - 21.42 is the 30% profit margin from the sell price of 71.42 without tax.