Question

If a number is increased from-----to
20, then increase per cent is 25%.​

Answer 1

Step-by-step explanation:

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%

Hence the net percent decrease is 4%

Answer 2

hope it helps u.....................