A number is first increased by 35% and then again increased by 25%. The number, so obtained, is decreased by 40%. The net increase or decrease per cent in the number is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. increase by 1.25%.
Let original number = 100
Net effect = 35 + 25 + 875/100 = 60 + 8.75 = 68.75%
New number = 100 + 68.75 = 168.75
Decrease by 40%:
⇒ 168.75 × = 101.25
Net increase = 101.25 - 100 = 1.25%