percentages re: heart rate

Question

When Jacob is sitting, his resting heart rate is 50 beats per minute.  When exercising, his heart rate increases to 160 beats per minute.  What is the percent of increase in heart rate?

Answer 1

Leslie,

 

% increase = (final-initial)/(initial) * 100

 

So ((160-50)/50)* 100 = 110*100/50 = 220%