Clear the doubt

REMYA M MOHAN (STUDENT) (138 Points)

31 October 2011  

R AND S ARE PARTNERS WITH CAPITAL OF RS 25000 AND RS 15000 RESPECTIVELY .INTEREST PAYABLE ON CAPITAL

IS 10%p.a .FIND INTEREST ON CAPITAL OF BOTH THE PARTNERS WHEN PROFIT EARNED IS2400

OPTIONS a .2500&1500        b 1500&900             c1200&1200                    dnone above

         answer given b  

       HOW AND WHY OPTION b   ? explain