Question

please solve it .....with solutions

Answer 1

Time taken by (A+B+C) to paint the wall =4 days Time taken by A alone to finish the work=15 days Time taken by B alone to finish the job =10 days Work done by (A+B+C) in 1 day =1/4 Work done by A alone in 1 day =1/15 Work done by B alone in 1 day =1/10 Work done by C alone in 1 day =1 /4-(1/15 +1/10) =1 /12 C will take 12 days to finish the work alone