Problem $4(12$ points$).$

Part I

The sand below has the following percentages passing the fine sieves. Calculate the fineness modulus of this sand. Remember about significant figures!

$\backslash$table$[[$Sieve Size,$\backslash$table$[[$Cumulative Amount$],[$Passing $(\%)]]],[$No$\mathrm{.}4,98],[$No$\mathrm{.}8,89],[$No$\mathrm{.}16,70],[$No$\mathrm{.}30,50],[$No$\mathrm{.}50,26],[$No$\mathrm{.}100,8],[$Sample Weight,$500g$