Question

Your heart beats 18 times every 15 seconds while at rest. While running it beats 25 times every 10 seconds. Find the heart rate in beats per minute at rest and while running

Answer 1

Question A) 25 beats(while running) = 10 seconds 
1  minute = 60 seconds

 steps )To find out how many beats for 1 minute while running you have to make 10 seconds into 1 minute by multiplying and to do that you need to multiply 10 x 6 = 60 sec ( 60 seconds is one minute) after that multiply 25 beats x 6 = 150 

Answer = the heart beats 150 times per minute while running

b) 18 beats (while resting) = 15 seconds
1 minute = 60 second

steps) just like the previous steps from question A, you need to make 15 seconds into 1 minute by multiplying, so 15 x 4 = 60 seconds. After that you need to multiply 18 x 4  = 72

answer) the heart beats 72 times per minute while resting

Hope this helps :)
 

Answer 2

For resting your heart would beat 72 times per minute and for running your heart would beat 150 times per minute (and together it would be 222)