Answer :
10%
If you add it all together it's 20$ +2$ tax so you do this
100% divided by 20$ is equal to x% divided by 22$
100/20=5
5*22=110
110-100=10%
If you add it all together it's 20$ +2$ tax so you do this
100% divided by 20$ is equal to x% divided by 22$
100/20=5
5*22=110
110-100=10%