Question

Sam counted his heartbeats while resting. His heart beat 220 times in 4 minutes. Sam's heart beat at thr same rate for 4 minutes. What is Sam's heart rate for 1 minute

Answer 1

55 times per minute.

Step-by-step explanation:

To know the rate for 1 minute, we need to divide the number of times that the heart beats by the total number of minutes, so:

`\frac{220\text{ times}}{4\text{ minutes}}=55\text{ times per minute}`

Therefore, Sam's heart rate is 55 times per minute.