SSC CHSL 2020 PYQ — Question 62

SSC CHSL - 14th October 2020 - Shift 1 • Quantitative Aptitude • Q62

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

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e 

Understanding

Tricks 

Application

  Length Breadth Height
Original 10 5 5
New 11 6 4

 

Now

Original Volume = 10 × 5 × 5 = 250 unit

New Volume = 11 × 6 × 4 = 264

Hence

Percent increment = 100/250 × 14

= 5.6% =