A laboratory test shows that a patient has a viral load of 5,000 copies/mL. If the treatment reduces the viral load by 80%, what is the new viral load?
Practice Questions
1 question
Q1
A laboratory test shows that a patient has a viral load of 5,000 copies/mL. If the treatment reduces the viral load by 80%, what is the new viral load?
1,000 copies/mL
2,000 copies/mL
3,000 copies/mL
4,000 copies/mL
An 80% reduction means that 20% of the original viral load remains. 20% of 5,000 copies/mL is 1,000 copies/mL.
Questions & Step-by-step Solutions
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Q
Q: A laboratory test shows that a patient has a viral load of 5,000 copies/mL. If the treatment reduces the viral load by 80%, what is the new viral load?
Solution: An 80% reduction means that 20% of the original viral load remains. 20% of 5,000 copies/mL is 1,000 copies/mL.
Steps: 6
Step 1: Identify the original viral load, which is 5,000 copies/mL.
Step 2: Determine the percentage reduction, which is 80%.
Step 3: Calculate the percentage of the viral load that remains after the reduction. Since 80% is reduced, 100% - 80% = 20% remains.
Step 4: Calculate 20% of the original viral load. To do this, multiply 5,000 copies/mL by 0.20 (which is 20% in decimal form).
