Question

When a grizzly bear hibernates, its heart rate drops to 12 heartbeats per minute which is 20% of its normal value. What is the grizzly bear’s normal heartbeat when not hibernating? * 40 heartbeats per minute 56 heartbeats per minute 60 heartbeats per minute 48 heartbeats per minute

Answer 1

Answer:

60 beats per minute

Step-by-step explanation:

12 Heartbeats per minute during hibernation is 20 percent of the normal value.

Let X be the normal heartbeat,

So, as per the question

20% of X = 12

20/100 * X = 12

Hence X = 60

So, the normal heartbeat of the beer is 60 beats per minute.

Answer 2

Answer:

$60$ heartbeats per minute

Step-by-step explanation:

Let the normal heartbeats of the bear is $x$ heartbeats per minute.

Given that the dropped heart rate is $12$ heartbeats which is $20 \%$ of the normal heartbeat. This can ve written in the form of the equation as

$12= 20\%$ of $x$

$\Rightarrow 12=\frac {20}{100}\times x$

$\Rightarrow x= \frac {12\times 100}{20}$

$\Rightarrow x=60.$

Hence, the normal heartbeats of the bear is $60$ heartbeats per minute