IT Placement Practice Test 2

Volume = l×b×h
⇒ 6×5×2 = 60 cm3
Volume is reduced by 19%
New Volume = (100-19)100×60 = 486000 = 48.6
Thickness is same but length and breadth reduces by x%
So,new volume = (x/100×6)(x/100×5)2 = 48.6
⇒ x=90
So, Length and Breadth reduced by 10%
⇒ new width = 5-(10 × 5/100) = 4.5