If a 50‑kg frog has 20% of its body mass as skeletal muscle, calculate the mass of skeletal muscle in kilograms.
Answer
10 kg
The correct answer is 10 kg — Multiply decimal by total mass: 0.20 × 50 kg = 10 kg.
Step-by-step solution
- Convert percentage to decimal: 20% = 0.20.
- Multiply decimal by total mass: 0.20 × 50 kg = 10 kg.
Common mistake: Multiplying 20 by 50 instead of 0.20 by 50.
Concept tested: Percentage calculation
Published · How this solution was prepared and checked
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