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Painter A can paint a house in 16 days and painter B can do the same work in 20 days . With the help of painter C, they paint the house in 8 days only. Then , Painter C alone can do this task in -

Painter A can paint a house in 16 days and painter B can do the same work in 20 days . With the help of painter C, they paint the house in 8 days only. Then , Painter C alone can do this task in - Correct Answer 80 days

16 days Painter A can paint a house 1 part 1 " " " " " 116"20 days painter B can paint a house 1 part 1 "  "   "  " " 120A  + B can do in 1 day = 116 + 120 = 5 + 480 = 980A  + B  +  C can do  in 1 day  = 18C can do in 1 day  = 18 - 980 = 10 - 980 = 180.'. C alone can do thework in  = 80 days 

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