Question

the population of a place increased by 25% in 2012. next year it decreased by 15%.find the total increase or decrease percent in initial population to the nearest whole number ​

Answer 1

Step-by-step explanation:

Suppose that:

The number to be 100

According to given question,

Number increased by 20%

100+20% of 100

100=

100

20

×100

100+20=120

Then,

Resulting number decreased by its 15%

=120−(15% of 120)

=120−(

100

15

×120)

=120−18

=102

Now, net increase =102−100=2

Increase %=

original number

net increases

×100

=

100

2

×100

Increase %=2%

Hence this is the answer,

Answer 2

Step-by-step explanation:

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