If in a pond there were 50 fishes last year and through reproduction, 10 new fishes are added, taking the current population to 60. What will be the birth rate per fish per year?

In a pond there are 20 lotus plants last year and through reproduction 8 new plants are added, taking the current population to 28. What is the birth rate?

If in a pond there are 201 lotus plants of last year and through reproduction 8 new plants are added, then the birth rate is

In a pond there were 20 Hydrilla plants. Through reproduction 10 new Hydrilla plants were added in a year. Calculate the birth rate of the population.

In a pound, last year there were 30 ltus plants. Through reproduction, 25 new lotus plants were added in one year while 8 plants died. The birth and death rates for the lotus population respectively are _______and _____individulas per lotus per year.

Dr. John is a botanist , he is experimenting with exotic species of rose plant Rose polyantha . He started with 40 plants, after a year 22 more plants were added thought reproduction but also 14 plants died during the experimentation . Which of the following statements are correct ? 1. The death rate is 0.35% per year 2. The birth rate is 0.55 % per rose per year 3. The birth rate is 0.55 % per year 4. The death rate is 0.35 % per rose per year

The population of a town is 125000. It is increasing at the rate of 2% per annum. What will be its population after 3 years?