It was during the onset of the Great Depression in the 1930s that the printers started printing paperbacks to sustain purchases.
A printer A can print 1 lakh books in 16 hours, printer B can print the same number of books in 20 hrs while printer C can print them in 24 hrs. All the printers are started at 5 p.m. while printer A is closed at 10 p.m. and the remaining two printers complete the work. Approximately at what time will the work be finished?