Question

Two hundred increased by 20% would be how much?

Answer 1

`240`

Explanation:

You can do this in two ways (I prefer the second):

(1) Work out how much `20%` is, and then add that to the `200`:
`200xx20/100=40->200+40=240`

(2) Realize that the total is `100+20=120%` of the original:
`200xx120/100=240`