Question

The sum of number when a number is increased by 10% and decreased by 10% is 100. What is the number

Answer 1

Answer:

• 10% Increase
• 10% Decrease

• According to the Question :

⇢ Number = No. × (100+Inc)% × (100-Dec)%

⇢ Number = 100 × (100 + 10)% × (100 - 10)%

⇢ Number = 100 × 110% × 90%

⇢ Number = 100 × 110/100 × 90/100

⇢ Number = 11 × 9

⇢ Number = 99

∴ Hence, the new number will be 99.