Trying to work out percentage of a figure

If you have £45 and want to work out the percentage of VAT @ 20% I know that you times it by 20 and divide it by 120 to give you the figure. I want to know how you come about that sum and how I would apply it to other figures for example £45 VAT of 25%.

Hope my explanation makes sense.

Many thanks

Re: Trying to work out percentage of a figure

Quote:

Originally Posted by

**mathsnumpty** If you have £45 and want to work out the percentage of VAT @ 20% I know that you times it by 20 and divide it by 120 to give you the figure.

I have no clue what you **mean** by that! "Times" **what** by 20? to give you **what** figure? If the initial value was 45£ and the tax is 20% of the value, then the actual amount of the tax is 45 time .20 (NOT 20) which is equal to 9£. Then the price, with tax add, would be 45+ 9= 54£. That is also 1.20 **times** 45£.

Quote:

I want to know how you come about that sum and how I would apply it to other figures for example £45 VAT of 25%.

Hope my explanation makes sense.

Many thanks

Not very much sense! Sounds to me like you are memorizing formulas (poorly) without **understanding** what is being done.

What is "25% of 45£? (That is the same as 0.25 times 45£.) What do you get when you add that tax to 45£?