Find your pulse and count how many times it beats in 15 seconds. -your pulse is 20 heart beats you run for 2 minutes and then take your pulse for 15 seconds. - your pulse is now 40 heart beats part a: at this rate, how long would it take for your heart to beat 700,000 times? express your answer in days. now express your answer in days, hours, minutes, and seconds. (example: 2 days, 4 hours, 21 minutes, 15 seconds) part b: you are training for a 5k race. this morning you ran 8 miles in 1 hour. if you run the race at this speed, how many minutes will it take you to run a 5k race?