From a crushed quartz sample, the fraction less than 5mm must be removed by screening. The feed sample contains 30% of minus 5mm material. After screening, the oversize fraction contained 85% of plus 5mm size while the undersize fraction contained 12% of plus 5mm. Determine the efficiency of the screen.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.4: Cicumference And Area Of A Cicle
Problem 46E: A tabletop is semicircular when its three congruent drop-leaves are used. By how much has the tables...
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From a crushed quartz sample, the fraction less than 5mm must be removed by screening. The feed sample contains 30% of minus 5mm material. After screening, the oversize fraction contained 85% of plus 5mm size while the undersize fraction contained 12% of plus 5mm. Determine the efficiency of the screen.

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