Question

If the number of bacteria in a colony doubles every 380 minutes and there is currently a

population of 42,450 bacteria, what will the population be 760 minutes from now?

Answer 1

In 380 minutes time, it will have doubled.

42,450 x 2 = 84,900

To get from 380 to 760, you double again.

So you need to multiply 84,900 by 2 again.

84,900 x 2 = 169,800.

Your answer is 169,800.