Question

A Number Is First Increased By 20% And Then Decreased By 20%. Ffnd The Net Increase Or Decrease Percent?

Answer 1

Step-by-step explanation:

Let number=100

Increase=100+20%of100=100+20=120

Decrease=120-20%of120=120-24=96

Decrease%=100-96/100×100=4%

Answer 2

Answer:

4%% decrease

Step-by-step explanation:

x=20% increase and y=20%decrease then

to find net percent x+y+(xy/100)

=20+(-20)+(20(-20)/100)

=-4%

or

when a number is first increased and then decreased by same percentage (let x%)then the net change is always decreases.

to find the net change = x²/100

=20*20/100=4%