Question

if your heart beats 72 times in 1 minute then calculate the heart beats in 1hour 1day 1week .​

Answer 1

Answer:

We start with 72beats1min . We want N(number)beats1hour . We'll need a conversion factor: i.e. there are 60 mins in 1 hour. So,

72beats1min∗60min1hour=4,320beats1hour ; Note: the minute units cancel because there is an unspoken (1) in front of each ( 11=1 ). But how do we know how to set up the conversion factor? It easily could have been 1hour60mins right? If we did that, the units would be beats∗hourmin2 .. that's just crazy..

As for how many beats per day.. the conversion factor is: 24hours1day . 4,320beats1hour∗24hours1day=103,680beats1day

In a year.. the conversion factor is 365daysyear .

103,680beats1day∗365days1year=37,843,200beats1year

If you assume a median life expectancy of 65 years: that's 37,843,200beats1year∗65years1lifetime=2,459,808,000beats1lifetime ..

So, that's all of the beats you might get. About 2.5 billion..

Answer 2

Answer:

in one hour =4320 times

in one day =1,03,680times

in one weak= 7,25,760