Question

A forest covers 66,000 acres. A survey finds that 0.8% of the forested old-growth trees. How many acres of old-growth trees are there?

Answer 1

528

Explanation:

Find 0.8% of 66,000

Do this through the proportional method.

x = unknown value

0.8% / 100

=

x / 66,000

Cross multiply

66,000 x 0.8

52,800

Now, since a percent is always over a 100, divide it by 100.

52,800/100

528