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I'm having a complete and utter total mental block.
Using a calculator only:
if 20,000 is an increase of 25%, what was the original figure?
I know the answer is 16,000, but what is the correct method for working out?
You'd never believe that A level maths, a degree and working with numbers my whole career could lead me to this would you? 😳
(20,000 / 125) * 100
20000 = 125%
Divide by 5
Multiply by 4
Shitting phone 😡
20000 / 125 x 100
Of course it is.
Thank you, I'll now bugger off suitably embarrassed.
You think that's bad, a colleague of mine had to ask around the office earlier what 400 / 8 was as she couldn't find her calculator. 🙄
a colleague of mine had to ask around the office earlier what 400 / 8 was as she couldn't find her calculator.
FFS!
Get the boss to send her here for a couple of hours:
http://www.khanacademy.org/#arithmetic
One of the all time classic Blackadder clips:
x + (x * 0.25) = 20,000
1.25x = 20,000
x = 20,000/1.25
x = 16000
Hope this Helps !!!