`1/15+1/12+1/(shiven)=1/6` `=>1/(shiven)=1/6-(1/15+1/12)` `=>1/(shiven)=1/6-9/60=1/60` Shiven will take 60 days to complete the work alone. Ratio of work done by Ram : Ali : Shiven = `1/15:1/12:+1/60` = 5 : 4 : 1 Shiven’s share = `1/10` x 24000 = 2,400.
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