Madhya Pradesh Police Exam Model Paper 6

Question : 58 of 101

Marks: +1, -0

A number is increased by 30% and then decreased by 25%. Evaluate the net increase or decrease in % ?

Decrement 2.5%
Increment 2.5%
Decrement 5%
Increment 5%

Solution:

Given:
Number increased = 30%
Number decreased = 25%
Formula Used:
Net increase/decrease = Increase% – Decrease% - (Increase %× Decrease%)/100
Calculation:
Net increase/decrease = Increase% – Decrease% - (Increase %× Decrease%)/100

⇒ 30 – 25 – (30 × 25){/}100

⇒ 5 – 7.5

⇒ - 2.5%

∴ Net decrement 2.5%
The correct option is 1 i.e. Decrement 2.5%.

Go to Question:

Prev Question

Next Question