Bihar Police Constable Model Paper 6

Given:
Increment in the number = 25%
Decrement in the number = 30%
Formula Used:
Net increase/decrease = Increase% – Decrease% - (Increase %× Decrease%)/100
Calculation:
Net increase/decrease = Increase% – Decrease% - (Increase %× Decrease%)/100
⇒ 25 – 30 – (30 × 25)/100
⇒ - 5 – 7.5%
⇒ - 12.5%
∴ Net decrement is 12.5%.
The correct option is 3 i.e. Decrement 12.5%