Let the age of father and son be x and y, respectively. x+y=11k ….(1) And x–y=3k ….(2) Subtracting (2) from (1), we get 2y=8k⇒y=4k x=11k−4k=7k Ratio of ages of father and son =
7k
4k
= 7 : 4 and not 8 : 5 Statement1 is false. When the age of son becomes twice, i.e., 4k+4k=8k, then the age of father =7k+4k=11k. Ratio after 4k years=11k:8k=11:8. Statement 2 is correct.