 <translate> Suppose Q invested Rs. y. Then, 50000/y = 4/6 or y = [50000 x 6/ 4] = 75000. The final answer: (E). <yor> Ká sọ pé Q fi Rs. y. Nígbà náà, 50000/y = 4/6 tàbí y = [50000 x 6/ 4] = 75000. Ìdáhùn tó péye: (E). 