Henry began his afternoon walk at 2:45, leaving from his house to visit a friend. For every 5 minutes he walked, he traveled north 2 blocks and east 1 block. He started on the corner of C Street and Second Avenue. He arrived at his friend's house at 3:10 in the afternoon.
On the corner of which streets does his friend live?
Bonus Question: Henry then spent 2 hours and 20 minutes at his friend's house. When he left, he walked to the store at the corner of K and Sixth Streets at the same rate as his earlier walk (though in a different direction). He spent 10 minutes at the store before walking home.
If he walked home at the same rate as his other walks, at what time did get home?