a board is 15 5/8 in. long . If it must be divided into three pieces of equal length , how long must each piece be ?

Answer 1

(15 5/8)/3 = 15/3 + (5/8)/3 = 5 5/24

or,

15 5/8 = 125/8
divide by 3
125/24 = 5 5/24