Question

rahuls heartbeat at the rate of 65 beats a minute when he is awake and 50 beats a minute when he sleeps (8 hours). how many times his heart beats in 24 hours

Answer 1

Good question next question

Answer 2

Heart beats,
when awake=65 times
when sleeping =50 times
total time of sleeping =8hours
total awake time in a day =24-8 = 16hours

now,
total heart beat = heart beat at time of sleeping + heartbeat at time of awake
=(8x50) + (16x65)
=(40) + (1040)
=1080 times in a day.