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In a study, 60% of patients with a certain disease were found to have a specific

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Question: In a study, 60% of patients with a certain disease were found to have a specific symptom. If 150 patients were studied, how many patients had the symptom? (2023)

Options:

  1. 60
  2. 90
  3. 75
  4. 100

Correct Answer: 90

Exam Year: 2023

Solution: 

Number of patients with the symptom = 60% of 150 = 0.6 × 150 = 90.

In a study, 60% of patients with a certain disease were found to have a specific

Practice Questions

Q1
In a study, 60% of patients with a certain disease were found to have a specific symptom. If 150 patients were studied, how many patients had the symptom? (2023)
  1. 60
  2. 90
  3. 75
  4. 100

Questions & Step-by-Step Solutions

In a study, 60% of patients with a certain disease were found to have a specific symptom. If 150 patients were studied, how many patients had the symptom? (2023)
  • Step 1: Understand that 60% means 60 out of every 100 patients.
  • Step 2: We need to find out how many patients out of 150 have the symptom.
  • Step 3: Convert 60% to a decimal. 60% as a decimal is 0.6.
  • Step 4: Multiply the total number of patients (150) by the decimal (0.6).
  • Step 5: Calculate 0.6 × 150, which equals 90.
  • Step 6: Conclude that 90 patients had the symptom.
  • Percentage Calculation – Understanding how to calculate a percentage of a total number.
  • Basic Arithmetic – Applying multiplication to find the number of patients with the symptom.
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