If a broad gauge track is laid with wooden sleepers with a density of M + 7, spacing of sleeper is 68 cm and the width of the sleeper is 25.4 cm, then the depth of the ballast cushion would be:

If a broad gauge track is laid with wooden sleepers with a density of

1.	If a broad gauge track is laid with wooden sleepers with a density of M + 7, spacing of sleeper is 68 cm and the width of the sleeper is 25.4 cm, then the depth of the ballast cushion would be:
A.	22.5 cm
B.	21.3 cm
C.	24.0 cm
D.	23.0 cm
Answer» C. 24.0 cm