The population of a state is known to grow at a rate proportional to the number of people presently living in the state. If after one decade the population has trebled and if after two decades the population is 150,000, find the number of people initially living in the state.

The population of a state is known to grow at a rate proportional to the number of people presently living in the state. If after one decade the population has trebled and if after two decades the population is 150,000, find the number of people initially living in the state.

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter2: Past, Present, And Future World Energy Use

Section: Chapter Questions

Problem 7P: The population of a state is 25,600 in the year 1800 and 218,900 in the year 1900. Calculate the...

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Concept explainers

Quantity takeoff

Quantity takeoffs (QTO) are precise estimates of the materials and labor costs required to finish a construction project. During the pre-construction phase, an estimator prepares them, breaking down the project into smaller, more manageable parts that are easier to evaluate. These measurements are used to prepare a construction scope bid. Estimators examine the drawings, specifications, and models to figure out different quantities and their costs. Since, the components, their quantity, and price are all included in the model, quantity take-off can be done automatically using Building Information Modelling (BIM). The time taken for completing a construction project can be reduced by the use of quantity takeoff. These takeoffs are also called material takeoffs and construction takeoffs.

Question

The population of a state is known to grow at a rate proportional to the number of people
presently living in the state. If after one decade the population has trebled and if after two
decades the population is 150,000, find the number of people initially living in the state.

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