nina can ride her bike 63360 feet in 3400 seconds and sophia can ride her bike 10 miles in 1 hour. what is ninas rate in miles per hour if there are 5280 feet in a mile

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.