Question

Area is 180,length is 1 1/4,what is the width

Answer 1

180 is the area and the length is 1.25 so we need to find the width. We need to divide 180/1.25 which is 144.
144*1.25 is 180
The width is 
144

Answer 2

To set it up as an equation...

A = L × W
180 = 1 1/4 × W
180 ÷ 1 1/4 = W
180 ÷ 5/4 = W
180 × 4/5 = W
144 = W