-1.64 as a mixed number

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2