Question

Bacteria X has a relative growth rate of 240 % (under ideal conditions). Some bacteria X are accidentally introduced into some twirly macaroni salad. Two hours after contamination, there were 50,000 bacteria X in the twirly macaroni salad.

Find the initial number of bacteria X introduced into the twirly macaroni salad:

Estimate the number of bacteria in the food 3 hours after contamination.

Answer 1

(A)

We are given

relative growth rate of 240 %

Let's assume

No = initial number of bacteria

so, we can set up equation as

Two hours after contamination, there were 50,000 bacteria X in the twirly macaroni salad

so, at t=2, N=50000

so, we get

..........Answer

(B)

we can plug back

now, we can plug t=3

and we get

..........Answer