2 miles in 13 minutes
speed = distance / time = 2/13 miles per minute
= 2/(13 x 60 ) miles per hour
firstly you will need to find the hours that were used.
using the ratio minutes : hours
60mins = 1hr
13mins = 13/60
= 0.2166666666666667
then you have to find the speed which is the miles per hour
speed = distance/time
= 2/ 0.2166666666666667
= 9.230769230769229miles per hour
you can round it up to 3sf making it;
speed = 9.23mph