A numbes increased by 20% and then it is decreased
by
20% Find the net increase or
decrease percent
Answers
What would you like to ask?
8th
Maths
Comparing Quantities
Increase and Decrease in Percentage
A number is increased by 20
MATHS
A number is increased by 20% and the increased number is decreased by 20%.Find the increase or decrease percent.
MEDIUM
Share
Study later
ANSWER
Let the number be =100
Increase in the number =20% of 100
=
100
20
×100
=20
Increased number =100+20
=120
The resulting number decreased by 20%
Decrease in the number =
120
20
×120
=24
New number =120−24
=96
Now, net decrease =100−96
Net % decrease =
Original number
Net decrease
×100
=
100
4
×100
=4%