A, B and C invest in a business in the ratio of 4 : 5: 7. C is a sleeping partner, so his share of profit will be half of what it would have been if he were a working partner. If they make Rs.36,000/- profit of which 25% is reinvested in the business, then find how much does B get (in Rs.).

10800

                                  A     :     B       :         C

Capital                         4      :      5      :         7

Profit                           4      :      5       :        7

New profit ratio           4       :       5      :       \(\frac{7}{2}\)      

                                8        :       10     :       7

25 % reinvested 

                          Profit to be shared b/w A, B & C 

                                     = 36000 x \(\frac{75}{100}\)

                                     = 27000

                       B's share = 27000 x \(\frac{10}{25}\)  = 10,800