Question

Find the change in a number which is first increased by 20% and then decreased by 20%.
Please Be Quick!!!(Emergency)

Answer 1

If the no. is x, then after this process the no. will change to 6x/25

Answer 2

Let no be X
If it is first increased by 20%
X + [ (X*20)/100 ] = (X*120)/100

If it is decreased by 20%
(120*X)/100 - (120*X*20)/100 = (120*80*X)/100
= (96*X)/100


change in the number
= X - (96*X)/100
= (4*X)/100

So, the change(reduction) in the number will be 4%