Question

Suppose that the amount of algae in a pond doubles every 6 hours. if the pond initially contains 50 pounds of algae, how much algae will be in the pond after 18 hours?

A. 400
B. 10,800
C. 300
D. 600

Answer 1

A. 400

Explanation:

initially have 50 pounds after 6 hours, doubles to 100. 6 (12 total) more hours 100 doubles to 200. after another 6 (18 hours) 200 doubles to 400.