per 
/ˈpɚ/ preposition
/ˈpɚ/ preposition 1 : for each
▪ The pay is $12 per hour. [=for every hour you work, you will be paid $12] ▪ The tickets are $25 per person. [=each ticket costs $25] ▪ The speed limit is 35 miles per hour. ▪ The car gets 32 miles per gallon. ▪ He averages 15 points per game. 2 somewhat formal : as directed by or stated in : according to
▪ Per your advice, I accepted their offer. ▪ The work was done as per [=according to] your instructions. ▪ As per usual [=as usual], I paid for our meal. [=I paid for our meal, which is what I usually do]
▪ The pay is $12 per hour. [=for every hour you work, you will be paid $12] ▪ The tickets are $25 per person. [=each ticket costs $25] ▪ The speed limit is 35 miles per hour. ▪ The car gets 32 miles per gallon. ▪ He averages 15 points per game.
▪ Per your advice, I accepted their offer. ▪ The work was done as per [=according to] your instructions. ▪ As per usual [=as usual], I paid for our meal. [=I paid for our meal, which is what I usually do]
