Soma had ` 10000 with her. Out of this money she lent some money to Akshay for 2 years at 15% simple interest. She lent remaining money to Brijesh for an equal number of years at the rate of 18%. After 2 years, Soma found that Akshay had given her ` 360 more as interest as compared to Brijesh. The amount of money which Soma had lent to Brijesh is –