Question

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

Answer 1

                 10 per minute  is 20% of normal

                       (10 / min)  =  0.2 x (normal)

Divide each side by  0.2 :        Normal  =  (10 / 0.2 min) = 50 / min

Answer 2

The grizzly bear's normal heart rate when not hibernating is 50 beats per minute.

I got this by using 10 beats per minute as my dividend and 20% as my divisor.

10 / 20% = 50.

To check: you can multiply 50 by 20% to get its percentage.

50 * 20% = 10

When a word problem uses a number and a percentage and is looking for the whole number, you must divide the number by its corresponding percentage. On the other hand,  when a word problem is looking for the value of the percentage where the total number and percentage is given, just multiply the two