Question 26760
From the information given we see that the record went down 21 seconds in 52 years (1975-1923 = 52 and 4:10-3:49 = 21).  Therefore, the yearly loss is 21/52 or 0.4 seconds per year.


a)World record = 4:10 - 0.4(given year-1923)


b) World record for 1999 = 4:10 - 0.4(1999-1923) = 4:10 - 30.4 seconds = 3:39.6
   This is very close to the actual record of 3:43.13