A person’s resting heart rate is 80 beats per minute. How many heartbeats will occur in 15 minutes?
Answer
1200 beats
The correct answer is 1200 beats — State the result: 1200 beats in 15 minutes.
Step-by-step solution
- Write down the given heart rate: 80 beats per minute.
- Determine the total time for which the heartbeats are to be counted: 15 minutes.
- Multiply the heart rate by the total time: 80 15.
- Calculate the product: 80 15 = 1200.
- State the result: 1200 beats in 15 minutes.
Common mistake: Multiplying by 10 instead of 15 or forgetting to multiply the rate by the total minutes.
Concept tested: Heart rate calculation
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