In a population of 500 goats, 18% are males. If each male mates with one female, how many distinct mating pairs can be formed?
Answer
90
The correct answer is 90 — Thus the number of distinct mating pairs equals the number of males, i.e., 90.
Step-by-step solution
- Calculate number of male goats: 18% of 500 = 0.18 × 500 = 90.
- Each male forms exactly one pair with a female.
- Thus the number of distinct mating pairs equals the number of males, i.e., 90.
Common mistake: Using the number of females instead of males
Concept tested: Sexual reproduction, pair formation
Published · How this solution was prepared and checked
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