arithmetic - the average annual incomein rs of certain labor workers is m and that of other workers is n the number of labour workers is 11 times that of other workers then the average monthly income in rsof all the workers is - skillgun

Solution: let the number of other workers be x.
Then, number of labor workers =11x.
Total number of workers = 12x.
.'. Average monthly income = M*11x + Nx 11M + N
--------------- = ------------
12x 12