During an IVF treatment, a technician retrieves 20 oocytes from a patient. If 14 of them are mature (metaphase II), what percentage of the retrieved oocytes were mature?
Answer
70%
The correct answer is 70% — Hence, 70% of the retrieved oocytes were mature.
Step-by-step solution
- Write the formula for percentage: (part/whole) × 100.
- Here, part = number of mature oocytes = 14, whole = total retrieved = 20.
- Calculate the fraction: 14 ÷ 20 = 0.7.
- Multiply by 100 to convert to percent: 0.7 × 100 = 70.
- Hence, 70% of the retrieved oocytes were mature.
Common mistake: Dividing 14 by 20 and forgetting to multiply by 100.
Concept tested: Percentage calculation in IVF
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