Wh Dirty shirts Clean shirts AGITATED TUB Pure Wh 97% Wh 87% Wh 8% Wh FILTER Recycled Wh
Following is a diagram of the shirt cleaning process at a professional clothing cleaning service. The shirts are soaked in a tub containing the industrial detergent "Whizzo" and then are wrung out and sent to be rinsed. the leftover whizzo is sent to a filter where the majority of the dirt is remove, and the cleaned detergent is recycled to join a stream of pure Whizzo input
Specifications:
1. Each 100 lbm of dirty t-shirts contains 2.0 lbm dirt
2. Washing removes 95% of dirt off shirts
3. Shirts absorb 25 lbm of whizzo of which 22 lbm is wrung back into the tub
4. Detergent enetering tub contains 97% whizzo, Detergent entering filter contains 87% whizzo, and wet dirt solids leaving the filter contain 8% whizzo
Find:
How much pure whizzo must be supplied for 100 lbm of dirty t-shirts?
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