620 years.
620 years, since one century equals 100 years, and one decade equals 10 years.
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20 decades are in 2 centurarys
No. 1 decade = 10 years 20 decades = (20 *10)= 200 years 2 centuries = 200 yrs. They are the same.
1 decade equals 10 years. So 2 decades is equal to 20 years.
2
1 century means 100 years.. So, 2 centuries = 2 * 100 years Therefore, 2 centuries is 200 years