How fast could I run 5 miles?

this week one of my 2 mile runs were 4 miles in 36 minnutes. so about 9 minnute pace the first three miles was ran in 27:47 and we ran the last one the track. the 3 miles we had to stop and wait for the other girls and wait for some cars to pass sometimes we left the clock running when we went back for them but some we didn't. I did a 5 mile race today there was lots of hills there was water sations about every 1.5 miles. and there were also water sprinklers. I ran 49:13 but I was running with a friend and she made me promise to run with her. at the last half mile i picked up the pace a lot and ran 15 seconds faster than het and passed 3 people. I was able to print easily and wasn't to tired when I was done. what pace did I run ad how fast could've I ran without having to run with my friend