What fraction of a century is 13 weeks?

Answer 1

1 century = 100 years → you know that 1 year = 52 weeks

1 century = 100 * 52 weeks

1 century = 5200 weeks

1 century = 5200 weeks

x century = 13 weeks

You make the cross-multiply, and you get:

5200x = 13

x = 13/5200 → you simplify by 13

x = 1/400

13 weeks represent a fraction of 1/400 of century.