The length and breadth of a cuboid are increased by 10% and 20%,respectively, and its height is decreased by 20%. The percentage increase in the volume of the cuboid is:

$5\frac{3}{5}$%

Volume of cuboid = Length × Breadth × Height

Ratio of dimensions of old to new cuboid,    

                       old     :     New

Length              10     :       11

Breadth             5      :       6

Height               5      :       4

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Volume          250      :     264

Percentage increase in volume = \(\frac{14}{250}\) × 100

= 5\(\frac{3}{5}\)%