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In a study, 200 patients were infected with a virus. If 40% of them developed sy

Practice Questions

Q1
In a study, 200 patients were infected with a virus. If 40% of them developed symptoms, how many patients showed symptoms?
  1. 80
  2. 60
  3. 40
  4. 20

Questions & Step-by-Step Solutions

In a study, 200 patients were infected with a virus. If 40% of them developed symptoms, how many patients showed symptoms?
  • Step 1: Understand that 40% means 40 out of every 100.
  • Step 2: Convert 40% to a decimal. 40% as a decimal is 0.4.
  • Step 3: Multiply the total number of patients (200) by the decimal (0.4).
  • Step 4: Calculate 0.4 * 200, which equals 80.
  • Step 5: Conclude that 80 patients developed symptoms.
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