Question

What is the expression used for population forecasting by the geometrical increase method?

(a) PO (1 + R/100)^n

(b) PO + n*x

(c) PO + n*x + (n (n+1) /2) *y

(d) PO – n*x

This question was posed to me during an interview for a job.

Question is from Population Forecasting topic in section Water Demand and Quantity of Environmental Engineering

Answer 1

The correct choice is (a) PO (1 + R/100)^n

To explain I would say: The expression of geometrical increase method is given by PO (1 + R/100) n

where PO is the present population, R is the average percentage growth rate per decade and n is the number of decades.