Question

a can do a job in 16 days and b can do the same job in 12 days .with the help of c .they can finish the job in 6 days only.then , c alone can finish it in

Answer 1

1/16+1/12+1/c = 1/6
1/c = 1/6-1/16-1/12
1/c = (8-3-4)/48
1/c = 1/48
c = 48days.