RBI Assistant Prelims 2015 Sitting 2 Paper

Dharma invested Rs. P for 3 years in scheme A which offered 12% per annum simple interest. She also invested Rs (P + 400) in scheme B which offered 10% compound interest (compounded annually), for 2 years. If the amount received from scheme A was less than that received from scheme B, by Rs. 304, what is the value of P?