Please answer correctly its my last assignment and I'm about to get a c in advanced science if I get a d or a f in any of my classes I will get kicked out of the magnet program if I get any links I will report if i get any false answers I will report. if I get any random mess I will report, do you understand me. if you don't know the answer just keep scrolling.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?