Candidates were expected to derive the two equations by applying the appropriate theory of logarithms. log2x –log2y = 2 ≡ log2 x/y = 2 which implies that x/y = 22 = 4 or x = 4y. Similarly, log2 (x - 2y) = 3 implies that x -2y = 8. Solving these two equations simultaneously resulted in
x = 16 and y = 4.
This question was reported to have been attempted by majority of the candidates and they performed well in it.
