It is 3 decades, because it is 30 years.
30.
300.
30 years = 3 decades so 1 year = 1/30 or 0.0333... lots of 3 decades.
Approx 262980
There are about: 3*10*52 = 1560 weeks
2600
One decade = 10 years. 49 decades = 490 years. There are 52 weeks in one year: 490 x 52 = 25480 weeks in 49 decades
3 decades = 3 x 10 = 30 years
There are 15,268,000 minutes in 3 decades
30 years
30
There are 1,814,400 seconds in 3 weeks.
3 weeks
3 decades after 2010 is 2040.
3 weeks
3 and more