Question
Download Solution PDFThe length and breadth of a cuboid is increased by 20% and 25%, respectively, while its height is reduced by 30%. What must be the total percentage increase/decrease in the volume of the cuboid?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculations:
Let the initial values of length, breadth and height be
100, 100 and 100.
Later after alterations,
Length = 120
Breadth= 125
And height = 70
Now, initial volume = 1000000
And final volume
= 120 × 125 × 70
= 1050000
Now, change percentage
= (1050000 - 1000000) × 100/1000000
= 50000 × 100/1000000
= 5%
Hence, The Required value is 5%.
Shortcut Trick
Volume increased% = 10/200 × 100 = 5%
Last updated on Jul 7, 2025
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