Ratios and Rates
Interactive practice questions
A pulse was recorded beating at $11$11 times per $10$10 seconds. How many beats per minute is this?
Easy
< 1min
A pulse was recorded beating at $17$17 times per $15$15 seconds. How many beats per minute is this?
Easy
< 1min
A pulse was recorded beating at $38$38 times per $30$30 seconds. How many beats per minute is this?
Easy
< 1min
The target heart-rate range during exercise is calculated using the age and resting heart rate of a person, as shown in the equations below.
Note: In the problem, HR = Heart Rate.
Medium
4min
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