I, my elder brother, and my sister will paint the windows of the house together . My brother and sister and i can do this separately in 12, 4and 6 days respectively. If the three of us do the work together we calculate how long it will take to complete the work ?
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2 days
Step-by-step explanation:
Work your brother does in 1 day = 1/12
Work your sister does in 1 day = 1/4
Work you do in 1 day = 1/6
If all of you worked together;
Work done in 1 day will be (1/12 + 1/4 + 1/6 ) = 1/2
So for completion of full work 2 days will be required.
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