Tamika measures her pulse rate at the peak of her exercising. It measures 155 beats per minute. This is \(2\frac{1}{2}\)times her resting pulse rate. How many beats per minute is Tamika's resting pulse rate?
Explanation
Divide 155 by \(2 \frac {1}{2}\).
\(155 \div 2\frac{1}{2}=155 \div \frac{5}{2}=155 \times \frac{2}{5}=31 \times 2=62\)
Her pulse rate at rest is 62 beats per minute.