fraction question

Question

From 8-10am, the ocean tide descends 15 3/4 feet below sea level.  At the end of the day, the tide rose by a total of 27 1/3 feet.  How far above sea level is the tide at the end of the day?

Answer 1

27 1/3 - 15 3/4 =

 

27 4/12 - 15 9/12 =

 

26 16/12 - 15 9/12 = 11 7/12 

 

 

11 7/12  ft above sea level