Question

There were 10 black bears in an area. Some years later, there were 17 black bears in the area. What is the percent gain?

Answer 1

The bear population gained 70%.

Explanation:

• As there are 10 black bears in an area.

• By rule of three, we consider that 10 bears represent 100% percentage.

Let is us consider 'p' denotes the current percentage of bears.

so

• 10 → 100%

• 17 → p

so

`p=(17* 100)/(10)`

`p=(1700)/(10)`

`p=170`

Subtract 100 from the 170 to determine the percentage of increase

`170-100=70`

Therefore, the bear population gained 70%.