Finding Other Percentages

Having found 10% it is then easy to find larger percentages from this
by multiplying the 10% accordingly

E.g. To work out 20% find 10% then multiply by 2
(Because 10% * 2 = 20%)

So having found 10% of £30.00 = £3.00
20% of £30.00 = £3.00 * 2
£3.00 * 2 = £6.00

Therefore 20% of £30.00 = £6.00