Bah, I hate percentages.
Doing a 2009 non-calc past paper and got everything correct except from this one percentage question. Wooh !
Anyway I can't get why my answer is incorrect.
The question is as follows :
This year, Ben paid £260 for his car insurance.
This is an increase of 30% on his last year's payment.
How much did Ben pay last year ?
I've seen the marking scheme and the answer is 200, done by 260/1.3, which is fair enough.
But in my method where have I gone wrong :
260=130%
26=10%
26*3=78=30%
260-78= 100 %
£182
Any ideas ?