Question

The heart beats 216 times in 3 minutes. What is the unit rate of the beating of the heart?

• A. $72$ times per minute
• B. $72$ times per hour
• C. $72$ minutes per times
• D. $72$ hour per times

Answer 1

The correct option is A $72$ times per minute

Given,
Number of heartbeats $=216$ times
Time taken $=3$ minutes
So,
Unit rate of beating =$\frac{216}{3}$
$=72$ times per minute
$=72$ times $:$ $1$ min