Ok, first you need to put 20 over 100: 
Now divide 100 by 20 and you will get 5
Every mile equals 5%
Take 5 and multiply it by 11 you should get 55%
Malachai has cycled 55% of the distance
Now divide 100 by 20 and you will get 5
Every mile equals 5%
Take 5 and multiply it by 11 you should get 55%
Malachai has cycled 55% of the distance