Directions :The question consists of two statements numbered “I” and “II” given below it. You have to determine which statement(s) is / are sufficient / necessary to answer the questions What is the value of R ?

Statement I : Sum at simple interest becomes Rs 4800 in T years at R% interest and Rs 5700 in 9 years at 10% rate of interest.

Statement II : The compound interest received after 2 years on Rs 2000 at ( T+8 ) % interest is Rs 2880.