Question

If 4 individuals in a laboratory population of 40 fruitflies died during a specific time (a week) interval, the death rate in the population per week is

• A. $1$
• B. $0.1$
• C. $10$
• D. $400$

Answer 1

The correct option is B $0.1$

Death rate = number of individual died/ total number of populations
Date rate $=\frac{4}{40}=0.1$