If Petra jogs 4 miles in 36 mins then she run 1 mile in nine mins. You do this by divding 36 by 4. Next you multiply 9 by how many miles she ran (11 miles) equaling 99 mins. There are 60 minutes in an hour so the smaller version it takes 1 hour and 39 minutes for Petra to run 11 miles.
the answer is 1 hour and 39 minutes for Petra to jog 11 miles.