Math Problem of the week

Congratulations to the before Christmas winners - The answer was 184 birds...

 Justin Bailey, Kade Baum, Ethan Graham, Taylor Gull, Brian Gunyan, Carter Hansen, Peter Heap, Laney Hicks, Andrew Holley, Ricky Holloman, David Huff, Ian Hunt, Caset Jenkins, Callie Johnson, Tremaine Lomax, Madisyn Lott, Allyson Marks, Joey Moleff, Molly Petersen, Ryan Powell, Ty Reese, Lucas    Roberts, Jeffrey Sass, Jayden Seamons, Lucy Sloan, Lex Smith, Sarah Snyder, Wyatt Swasey, Sydney Warner, and Hailey Wilson 

This week's problem is:

On the Way Back To School

On Oscar’s trip to school, he took 50 minutes to walk 2.7 miles.  He walked at a constant speed for the first 40 minutes, then increased his speed by exactly 1 m/h.  How fast was Oscar walking for the first 40 minutes of his trip?