Passage
Direction : Read the following questions carefully and choose the right answer.
Dholak and Tabla entered in a partnership business in which Tabla invested Rs. 50,000. At the end of 4 months Tabla withdrew Rs. 7500 and at the end of another 5 months he again withdrew Rs. 9000. Dholak had left his investment intact, then what was his investment if at the end of one - year he received 40% of the total profit?