M and N working separately can complete a job in 6 and 12 hours respectively. If they work for an hour alternately M starting at 10:00 AM when will the job be done?

M and N working separately can complete a job in 6 and 12 hours respec

1.	M and N working separately can complete a job in 6 and 12 hours respectively. If they work for an hour alternately M starting at 10:00 AM when will the job be done?
A.	2:00 PM
B.	8:00 PM
C.	7:00 PM
D.	6:00 PM
Answer» E.

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M and N working separately can complete a job in 6 and 12 hours respectively. If they work for an hour alternately M starting at 10:00 AM when will the job be done?

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