Agalya and Bhairavi enter into a partnership and Agalya invests Rs 14000 in the partnership. At the end of 3months she invests Rs 5000. At the end of another 4 months, she invests the another Rs 6000. If Bhairavi invests a certain sum in the partnership at the beginning of the year and leaves it and receives Rs 9720 as her share if the total of Rs 31320 a year, how much did Bhairavi invest in the company?

Agalya's effective capital is 14000 times 3 plus 19000 times 4 plus 25000 times 5, which totals 231000. Bhairavi's share of the profit is Rs. 9720 out of Rs. 31320, making Agalya's share Rs. 21600 and their ratio 21600 to 9720, which is 20 to 9. Since Bhairavi invested for 12 months, her investment multiplied by 12 equals 231000 times 9 divided by 20, resulting in an investment of Rs. 41400.

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