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

60 beats per minute

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

`60` heartbeats per minute

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}* x`

`\Rightarrow x= \frac {12* 100}{20}`

`\Rightarrow x=60.`

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