Question

Dan has a wrench which can open to accommodate three different sizes of washers, 5/16 inch, 3/8 inch, and 2/5 inch. Which washer is the smallest?

Answer 1

5/16 = 25/80
3/8 = 30/80
2/5 = 32/80

Because 25/80<30/80<32/80, the washer with the size of 5/16 inch is the smallest~