How many minutes in a year

There are 525,600 minutes in a year (365 days)

How do we know that?

Lets begin from what we know towards what we want to know.

We know a normal calendar year has 365 days. We know there 24 hours in day. We also know there are 60 minutes in a day.

Therefore;

1 hour = 60 minutes

24 hours = $(60\times 24)$= 1440 minutes

365 days x 24 hours = $(365\times 24\times 60)$ = 525,600 minutes

If it we are looking at a leap year, we simply replace 365 days with 366 days in which case we get

366 days x 24 hours = $(366\times 24\times 60)$ = 527,040 minutes