When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20% of its normal value. What is a grizzly bear's normal heart rate, in beats per minute, when not hibernating?

Question

When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is  20% of its normal value. What is a grizzly bear's normal heart rate, in beats per minute, when not hibernating?

Bytelearn · Accepted Answer

Identify normal heart rate: Let n be the normal heart rate of the grizzly bear in beats per minute. Identify the expression for 20% of the normal heart rate. Expression for hibernating heart rate: 20%(n) = 0.20 * nExpression for hibernating heart rate: We found: Expression for hibernating heart rate is 0.20 * n We know: Value for hibernating heart rate is 10 beats per minute Set up an equation to find n, the normal heart rate. Equation for hibernating heart rate is 10 = 0.20 * nSet up equation for normal heart rate: We found: 10 = 0.20 * n Solve for n. 0.20 * n = 10 n = 10 / 0.20 n = 50 The normal heart rate of a grizzly bear is 50 beats per minute when not hibernating.

When a grizzly bear hibernates, its heart rate drops to $10$ beats per minute, which is $20 \%$ of its normal value. What is a grizzly bear's normal heart rate, in beats per minute, when not hibernating?

Full solution

More problems from Percent of change: find the original amount word problems

Related topics

When a grizzly bear hibernates, its heart rate drops to 101010 beats per minute, which is 20% 20 \% 20% of its normal value. What is a grizzly bear's normal heart rate, in beats per minute, when not hibernating?

When a grizzly bear hibernates, its heart rate drops to $10$ beats per minute, which is $20 \%$ of its normal value. What is a grizzly bear's normal heart rate, in beats per minute, when not hibernating?