Question

There are 25,000 trees in a forest . If the target rate for growth in the number of trees is 10% per year, what will their number be after 3 years?
Options:
32700 trees
25600 trees
33275 trees

Answer 1

Answer:

33275

Step-by-step explanation:

After 1 years:

No. of trees = 25000 + 10% of 25000

                   = 25000 + 2500

                   = 27500

After 2 years:

No. of trees = 27500 + 10% of 27500

                   = 27500 + 2750

                   = 30250

After 3 years:

No. of trees = 30250 + 10% of 30250

                   = 30250 + 3025

                   = 33275

Or directly, use:

No. of trees = 25000 x (1 + r)ⁿ

                   = 25000 x (1 + 10/100)³

                   = 33275