Question

If in a pond there were $40$ lotus plants last year and through reproduction $16$ new plants are added, taking the current population to $56$, now the birth rate will be

• A. $5.6$
• B. $0.4$
• C. $0.5$
• D. $1.6$

Answer 1

The correct option is B $0.4$

Birth rate is defined as the increase in the numbers of members with respect to the members of the population.
If in a pond there are $40$ Lotus plants last year and through reproduction $16$ new plants are added, taking the current population to $56$, then the birth rate will be $(56-40)/40=0.4$.