Question
A person X can clean up all of the crime in a city in 10 hr working alone. Person Y can do the same job
A person X can clean up all of the crime in a city in
10
hr working alone. Person Y can do the same job alone in
12
hr. If person Y starts crime fighting at
8
A.M. and person X joins him at
9A.M.,
at what time will they have all the crime cleanedup?
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Euclidean Geometry And Transformations
Authors: Clayton W Dodge
1st Edition
0486138429, 9780486138428
