Pipe A can fill a tank in 15 hours, pipe B can fill the same tank in 27 hours and pipe C can fill the same tank in 10 hours. The time taken by them to fill the same tank if they operate together is::
Given:
Pipe A fills tank in 15 hours
Pipe B fills tank in 27 hours
Pipe C fills tank in 10 hours
Find time when all three work together.
Solution:
A + B + C rates =
=
=
Time = hours
Alternate Solution (Exam Trick):
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