Read the statement given below and choose the correct option-
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality was 240, immigration was 20, and emigration 30. The net increase in population is?
Read the statement given below and choose the correct option-
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality was 240, immigration was 20, and emigration 30. The net increase in population is?
The correct option is A Zero
The correct option is A.
Explanation of correct option:
Step 1: Given data
Average natality (B) = 250
Average mortality (D) = 240
Immigration (I) = 20
Emigration (E) = 30
Step 2: Applying the formula
Formula Used: Net increase in the population (P) = (B+I)-(D+E);
Where B is Natality, I is immigration, D is Mortality, and E is Emigration.
Step 3: Solving equations to get the required value
Solving equations to get the required value :
Given B=250, D=240, I=20, E=30
P = [(250+20) - (240+30)]
P = [(270) - (270)]
P = 0
Final answer: The net increase in the population is zero.
Zero
The correct option is A.
Explanation of correct option:
Step 1: Given data
Average natality (B) = 250
Average mortality (D) = 240
Immigration (I) = 20
Emigration (E) = 30
Step 2: Applying the formula
Formula Used: Net increase in the population (P) = (B+I)-(D+E);
Where B is Natality, I is immigration, D is Mortality, and E is Emigration.
Step 3: Solving equations to get the required value
Solving equations to get the required value :
Given B=250, D=240, I=20, E=30
P = [(250+20) - (240+30)]
P = [(270) - (270)]
P = 0
Final answer: The net increase in the population is zero.
