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A population of a town decreases by 15% in one year. If the population was 2000,

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Question: A population of a town decreases by 15% in one year. If the population was 2000, what is the population after the decrease?

Options:

  1. 1700
  2. 1800
  3. 1900
  4. 1600

Correct Answer: 1800

Solution: 

New Population = Original Population - (15% of Original Population) = 2000 - (0.15 * 2000) = 2000 - 300 = 1700.

A population of a town decreases by 15% in one year. If the population was 2000,

Practice Questions

Q1
A population of a town decreases by 15% in one year. If the population was 2000, what is the population after the decrease?
  1. 1700
  2. 1800
  3. 1900
  4. 1600

Questions & Step-by-Step Solutions

A population of a town decreases by 15% in one year. If the population was 2000, what is the population after the decrease?
  • Step 1: Identify the original population, which is 2000.
  • Step 2: Calculate 15% of the original population. To do this, multiply 2000 by 0.15.
  • Step 3: Perform the multiplication: 0.15 * 2000 = 300.
  • Step 4: Subtract the amount calculated in Step 3 from the original population. So, 2000 - 300.
  • Step 5: Perform the subtraction: 2000 - 300 = 1700.
  • Step 6: The new population after the decrease is 1700.
  • Percentage Decrease – Understanding how to calculate a percentage decrease from a given value.
  • Basic Arithmetic – Performing basic arithmetic operations such as multiplication and subtraction.
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