An hour has 60 minutes, then there are
[tex]1\cdot60=60[/tex]minutes in an hour. A day has 24 hours, then there are:
[tex]24\cdot60=1440[/tex]minutes in a day. A year has 365 days then there are:
[tex]365\cdot1440=525600[/tex]minutes in a year.
a)
Once we know how many minutes are in a year we can calculate how many beats there are in 20 years; to do this we multiply the number of years by the minutes in a year and by the beats per minute:
[tex]525600\cdot20\cdot70=735,840,000[/tex]Therefore, there are 735,840,000 beats in 20 years.
b)
To find how much time has elapsed we divided the number of beats by the beats per minutes.
[tex]\frac{1200703}{70}=17,152.9[/tex]Then, it has elapsed 17,152.9 minutes.
