The number of planks of dimensions (4m × 5m × 2m) that can be stored in a pit which is 40, long 12 m wide and 16 m deep, is
Volume of a cuboid = Length × Breadth × Height
Volume of pit = 40 m × 12 m × 16 m = 7680 m3
Volume of plank = 4 m × 5 m × 2 m = 40 m3
No. of planks = 
= 192
7