Question

- A certain forest covers an area of 30 square kilome-

ters. In 2018, the number of pine trees in this
particular forest was 75,000. In 2019, the number
of pine trees had decreased so that there was an
average of 2,000 pine trees per square kilometer in
the forest. What was the total percent decrease in
the number of pine trees in this forest from 2018 to
2019?
E. 20%
F.24%
G. 25%
H. 30%

Answer 1

E

Explanation:

2018 : 75 000 pines

2019 : 2000 pines / km^2 * 30 km^2 = 60 000 pines

(75 000 - 60 000) / 75 000 = .2 or 20 %