Question

Decrease £200 by 12.5%

Answer 1

Non-calculator
Method

`100\% = 200`
You divide both sides by 10 to get 10%

`10\% = 20`
You divide by 10 to get 1%

`1\% = 2`
Now you divide by 2 to get 0.5 (or 1/2 of 1)

`0.5 \%= 1`
You can find 2% by multiplying 2 to 1% and 2

`2\% = 4`
Now you need to add the 10% with 0.5% and 2% which give you 12.5%.


`12.5\% = 20 + 1 + 4`

`12.5\% = 25`
Now you takeaway 25 from 200

`200 - 25 = 175`

Decrease 200 by 12.5%

`175`

Answer 2

25% of £200 = £50
25% divided by 2= 12.5%
£50 divided by 2 = £25
£200-£25 = £175