Question

There where 10 black bears in an area. Some years later there where 17 black bears in the area what is the percentage increase

Answer 1

the percentage increase is 7% because 17-10 is 7 so therefore it increased by 7

Answer 2

For this case we have to find the percentage increase in black bears. For this, we make a rule of three:

10 -----------------> 100%

17 -----------------> x

Where "x" represents the current percentage of bears.

$x = \frac {17 * 100} {10}\\x = 170$

We subtract to know the percentage of increase:

$170-100 = 70%$

Thus, the bear population increased 70%

Answer:

70%