IT Placement Practice Test 8

Volume =l×b×h = 6×5×2 = 60 cm3.
Now volume is reduced by 19%.
Therefore, new volume = (100−19)100×60=48.6.
Now, thickness remains same and let length and breadth be reduced to x%.
so, new volume: (x100×6)(x100×5)2=48.6.
Solving we get x =90.
thus length and width is reduced by 10%.
New width = 5-(10% of 5)=4.5.