Partnership

Dear friends, I request you to solve the following problem (partnership) for which i require solution for examination:
Charan and Bharan were sharing profits in the ration of 3:1 in their partnership business.  They were having an office manager. Mr. Karan drawing a salary of Rs.18,000/- per annum.  with effect from 1st July 2016 they decided to admit Mr. Karan into partnership for a fift share in profits. Any excess of karan's share over and above his sllary and commission (at 5% net profits after charging such commission) which he used to get previously is to be borne by Charan.  For the year ended June 30, 2017 the profits of the firm (before charging Karan's Salary and commission) amounted to Rs.2,62,440.  Show the final distribution of profits. .............source B.com III semster Dr.BRAOU Hyd Page 93