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In a population of 2000, if 5% are carriers of a disease, how many are carriers?

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Question: In a population of 2000, if 5% are carriers of a disease, how many are carriers? (2020)

Options:

  1. 100
  2. 50
  3. 200
  4. 150

Correct Answer: 100

Exam Year: 2020

Solution: 

Number of carriers = 5% of 2000 = 0.05 × 2000 = 100.

In a population of 2000, if 5% are carriers of a disease, how many are carriers?

Practice Questions

Q1
In a population of 2000, if 5% are carriers of a disease, how many are carriers? (2020)
  1. 100
  2. 50
  3. 200
  4. 150

Questions & Step-by-Step Solutions

In a population of 2000, if 5% are carriers of a disease, how many are carriers? (2020)
  • Step 1: Understand that 5% means 5 out of every 100 people.
  • Step 2: Convert 5% into a decimal by dividing 5 by 100, which gives you 0.05.
  • Step 3: Multiply the total population (2000) by the decimal (0.05) to find the number of carriers.
  • Step 4: Calculate 0.05 times 2000, which equals 100.
  • Percentage Calculation – Understanding how to calculate a percentage of a total population.
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