Suraj invested a total of Rs 16000 in two schemes A and B. Out of the total money he invested some amount in scheme A which offers simple interest at the rate of 6% per annum for 2 years and the other amount in scheme B which offers interest at the rate of 11% per annum for 2 years. At the end of 2 years he found that the interest received from scheme B is Rs 120 more than the interest received from scheme A then find out amount invested in scheme B?