Basic maths question...

jleavy046

Hi folks,
My head is melted with this so I have to just give up and look for an expert...

A sum of money was given to me. Before I received it however 15% was taken away. How do I calculate what the full amount was?

Let's say I got €1190. I want to add 15% to this to get the original amount.

So, 1190 x 1.15 = €1368.50. Is that the correct calculation? What's wrong with it?

I now know the original amount was actually €1400.00, which makes sense to my basic brain as 1400 * .15 = 210, and then 1190 +210 = €1400.

On short, how do I get to €1400 without knowing it!



Going for a coffee...........

SimonTemplar

(1190 / 85) * 100

The '85' comes from 100 - 15. Because you have 85% of the original amount.

1190 * 1.15 is wrong because your are getting 15% of the net amount, and not the original amount.

TOEJOE

Simon TemplAr: you have solved the Mystery........

Athdara

1190 /85 = 1%
1%= 14
14 x 100 = 100%
100% = 1400

jleavy046

Hi all - in particular SimonTemplar,
Thank you, thank you and thank you!

Now, why couldn't Google just tell me that!

Joe

SimonTemplar wrote: »

(1190 / 85) * 100

The '85' comes from 100 - 15. Because you have 85% of the original amount.

1190 * 1.15 is wrong because your are getting 15% of the net amount, and not the original amount.

Yakuza

jleavy046 wrote: »

Hi all - in particular SimonTemplar,
Thank you, thank you and thank you!

Now, why couldn't Google just tell me that!

Joe

Try WolfRamAlpha