P and Q can do a work in 4 hours and 12 hours respectively. P starts the work at 9am and they work alternately for one hour each. When will the work be completed ?
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1/4+1/12 = 1/3
14+ 112 = 13
> work is completed in 2 hours
>Then the total time to complete the work by P and Q working Alternetivly = 2 x 3= 6 hours.
> Thus, work will be completed at 3pm.
************ BE BRAINLY **********
HOPE THIS HELPS!
1/4+1/12 = 1/3
14+ 112 = 13
> work is completed in 2 hours
>Then the total time to complete the work by P and Q working Alternetivly = 2 x 3= 6 hours.
> Thus, work will be completed at 3pm.
************ BE BRAINLY **********
HOPE THIS HELPS!
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