In a company printing work is done by two machine 5% of the work done by machine A are wasted , and 40% of work done by machine B are wasted. if the 80% of the total work is done by machine A. then what is the total percentage of wastage.
If total 100 units of job is done, then
80 units on machine A and 20 units of machine B.
wasted work by A = .05*80 = 4 units
wasted work by B = .4* 20 = 8 units
total wasted work = 12 units.
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