Some petrilin has 30% penesinn how much do you need to get 18.75 penessin

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Find percent notation for 0.008 0.008=

Can someone me with this problem . show your work .