Originally Posted by
Debsta There are basically two ways to increase a number by a given percentage (15% in this case).
The long way:
If X is the original number then you could calculate 15% of X and add it on to X, ie X + 0.15 X (15% = 15/100 = 0.15)
The short way:
X + 0.15 X = 1X + 0.15 X = (1+0.15) X = 1.15 X
That's where the 1.15 comes into it.
So to increase X by 15%, simply multiply by 1.15.
To increase X by 15% and then increase the new value by 15% again, you'd have 1.15 * (1.15 X) = (1.15*1.15) *X.
What is the "multiplier" in this case, and what percentage increase does this represent?