2600
1560
One decade = 10 years. 49 decades = 490 years. There are 52 weeks in one year: 490 x 52 = 25480 weeks in 49 decades
There are about: 3*10*52 = 1560 weeks
There are 5 decades in half a century.
5 weeks
There are 5 decades in 50 years.
5
672365
0.042
1 year = 12 months so 5 decades = 5*10 = 50 years = 50*12 = 600 months!
50 years
they are 5 full weeks in may