RBI Grade B Officers 2016 Sep shift 1 Paper

Ram invested Rs. P in scheme A and Rs. 2P in scheme B, for two years each. Scheme A offers simple interest p.a. Scheme B offers compound interest (compounded annually) at the rate of 10% per annum. Respective ratio between the interest earned from scheme A and that earned from scheme B was 8 : 21.
Quantity I : Rate of interest offered by scheme A.
Quantity II : Rate of interest offered by scheme C (simple interest per annum), when Rs. 1600 is invested for 3 years earns an interest of Rs. 384.