Question

In a laboratory there are $40$ fruit flies last week and during experiment $4$ fruit flies died in a week. Calculate the death rate.

• A.
  $0.1$ individual per fruit fly per year
  
• B.
  $0.4$ individual per fruit fly per week
• C. $0.1$ individual per fruit fly per week
  
• D. $0.36$ individual per fruit fly per week
  

Answer 1

The correct option is C $0.1$ individual per fruit fly per week

Death rate of fruit fly population in one week

According to the given question:

• Number of fruit flies died in the tenure under consideration (1 week) $=4$
• Number of fruit flies in the original population (in the last week) $=40$

Death rate = 4/40

$=0.1$ individual per fruit fly per week