RBI Assistant Prelims 2016 Sitting 4 Paper

Poonam invests Rs. 4200 in scheme A which offers 12% per annum of simple interest. She also invests Rs. (4200 - P) in scheme B offering 10% per annum of compound interest (compounded annually). The difference between the interests Poonam earns from both the schemes at the end of 2 years is Rs. 294, what is the value of P?