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K A person X can clean up all of the crime in a city in 6 hr working alone. Person Y can do the
K A person X can clean up all of the crime in a city in 6 hr working alone. Person Y can do the same job alone in 9 hr. If person Y starts crime fighting at 8 A.M. and person X joins him at 12 Noon, at what time will they have all the crime cleaned up?
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Since Person Y can clean up all of the crime in the city in 9 hours working alone in 4 hours ...
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Introduction to Algorithms
Authors: Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest
3rd edition
978-0262033848
