What is the speed of Train X in km/hr ?
(I) The length of train X is twic that of train Y and speed of train Y is 100 m/sec.
(II) Train X crosses than Y in 10 seconds. The length of train X is 100 m.

Options

A. If statement I alone is sufficient but statement Il alone is not sufficient.
B. If statement Il alone is sufficient but statement I alone is not sufficient.
C. If each statement alone (either I or II) is sufficient.
D. If statement I and II together are not sufficient.

Answer

D