Question

a number is increased by 20%then decrease by 20% what is the increase and decrease % in this process

Answer 1

let the given number be x.
increased number
=
120% of x= (x × 120/100) = 6x/5
decreased number = 80/100 × 6x/5 =
(6x/5 × 80/100)= 24x/25
net decrease = (x - 24x/25)= x/25
net decrease%= x/25×1/x×100% = 4%


x = 4%

Answer 2

the answer is incomplete. Can u please tell that in last we have to find increase or decrease percentage. ya fir inc. and dec. percentage.