Question

Suppose that the amount of algae in a pond doubles every 5 hours. If the pond initially contains

10 pounds of algae, how much algae will be in the pond after 20 hours?

Answer 1

160 pounds of algae

Explanation:

10 times 2 is 20 ( first 5 hours )

20 times 2 is 40 (10 hours)

40 times 2 is 80 (15 hours)

80 times 2 is 160 ( 20 hours)

there would be 160 pounds of algae