SSC CHSL 2020 PYQ — Question 66

SSC CHSL - 18th October 2020 - Shift 1 • Quantitative Aptitude • Q66

If the length of a rectangle is increased by 12% and the breadth is decreased by 8%, the net effect on the area is:

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e increase by 3.04%.

Understanding Application

To solve this kind of problems we can use = (Increment x Decrement)/100

Length is increased by 12% so new length = 100 + 12 = 112

Breadth is decreased by 8% = 100 - 8 = 92

(112 x 92) / 100 = 103.04

So there is Increment of 3.04%