IBPS RRBs Officer Scale I and II 12 Se 2015 Paper

A sum of money was invested for 14 years was in Scheme A which offers simple interest at a rate of 8 % p.a. The amount received from Scheme A after 14 years was then invested for two years in Scheme B which offers compound interest (compounded annually) at a rate of 10% p.a. If the interest received from Scheme B was Rs. 6,678, what was the sum invested in Scheme A ?