Tom, Amanda and Harry working alone can
finish a task in 4, 6, and 12 hours respectively.
Tom, Amanda and Harry start working
together and work for 1 hour, then Tom left
and then Amanda and Harry work together
for 1 hour, then Amanda left and the rest of
the work is done by Harry alone. If the task
was started at 10.00 am, then at what time
does the task get completed?
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Answer:
3:00 pm
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