The cement clinker mixture screened through a $14-$mesh screen. The screen analysis data is given below, Calculate the overall effectiveness of the screen

Mesh No$.$ Screen opening, $D_{}(mm),$ Weight $(\%)$ retained

$\backslash$table$[[,,$Feed Overflow Underflow$],[4$ on$,4\mathrm{.}699,14\mathrm{.}3,20\mathrm{.}0,-],[8$ on$,2\mathrm{.}362,20\mathrm{.}0,28\mathrm{.}0,-],[14$ on$,1\mathrm{.}168,20\mathrm{.}0,28\mathrm{.}0,-],[28$ on$,0\mathrm{.}589,28\mathrm{.}5,24\mathrm{.}0,40\mathrm{.}0],[48$ on$,0\mathrm{.}295,8\mathrm{.}6,-,30\mathrm{.}0],[100$ on$,0\mathrm{.}147,5\mathrm{.}7,-,20\mathrm{.}0],[100$ through,$0\mathrm{.}074,2\mathrm{.}9,-,10\mathrm{.}0],[($Answer: $E=62\mathrm{.}478\%),,,,]]$