I have a rather simple question about percentages that I can't solve for the fourth time. It comes up every few months and I just have to 'guess' the number but there must be a simple formula that I just cant figure out.
Basically it is the following.
y - 40% = 1,80
How do I calculate y?
I know simply adding 40% to 1,80 and then subtracting 40% off the result wont work because the basis for the percentage is different.
What value must I multiply 1,80 by so that when I subtrack 40% of the result I will get back to 1,80?