Wer. It is given that $100\frac{t}{h}r$ of muricipal waste having $8\%$ of glass of designed size for feed to screen was taken to rotary screen for the removal of glan at MSW site. Determine the recovery efficiency $4$ effictivenen of the screen based on the following data: $.$

$($i$)$ weight of andes flow $=10\frac{t}{h}r$

$($ii$)$ Weight of glass in screen under flow $=7\mathrm{.}2\frac{t}{h}r$ Assume suitable data if necenary in accordance with the MSW disposal rules of India$)$